further corrections(?) - #137

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further corrections(?)#137
darijgr wants to merge 3 commits into
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  • More little examples and parentheticals to help the reader check understanding.

  • Again, \C{compute} -> \C{Compute} since the two are not the same (right?) and it is the latter that is being used.

  • I think the syntactic sugar in the definition of same_bool is expanded more like I suggest than like the previous text suggests (even though the resulting functions, of course, are
    equivalent). Is that so?

  • Experimental rewrite of the paragraphs on implicit argument. Currently, "About cons" does NOT say anything about "implicit" or "maximally inserted" arguments (at least not on my
    installation). Thus I removed the mention of "About" here (it should be introduced somewhere, maybe in a separate subsection about Evaluate, Search, About and friends). On the
    other hand, I have added the (A := U) notation for manually providing implicit arguments.

Comment threadtex/chProgramming.tex Outdated
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Thanks, I'll carefully review this pr later today

Comment threadtex/chProgramming.tex
Comment threadtex/chProgramming.tex Outdated
Comment threadtex/chProgramming.tex
Comment threadtex/chProgramming.tex
case, the result of the function is zero. Another possible view on
\C{subn} it to see it as a subtraction operation on natural numbers,
made total by providing a default value in the ``exceptional'' cases.
case, the result of the function is zero. We can view

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I don't approve this change

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The change goes on for a few more lines -- I reworded rather than removed this sentence. I was trying to remove the word "exceptional" since I found it somewhat counterintuitive to think of 1/2 of all possible inputs as "exceptional". But I don't have a strong preference either way.

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Another way to state this behavior precisely is saying that the subtraction is truncated at 0. See monus.

Comment threadtex/chProgramming.tex Outdated
Comment threadtex/chProgramming.tex Outdated

The name \C{seq} refers to (finite) ``sequences'', also called
``lists''. This definition actually describes the type
``lists''. This definition describes the type

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I don't approve this change.

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What does the word "actually" mean for you? To me it means that we are making things more correct or more precise, so I don't understand its meaning in this sentence (there is nothing wrong about "sequences" or "lists").

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Sorry, one of my comment was misplaced. I hope it is correct now.

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"actually" refers to the fact "seq" is only a synonym for "list".

The situation is not very satisfactory, because if we type "Print list." in Coq, we get the following text:

Inductive list (A : Type) : Type := nil : seq A | cons : A -> seq A -> seq A

So "list" is used in the first part, and "seq" is used after the ":=" characters. This is messy at best.

Comment threadtex/chProgramming.tex Outdated
@gares

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@darijgr I had a little chat with @ybertot and we believe that the best way forward for this PR is that you split into two parts: one containing the minor fixes, typos, etc which can be merged fast, and another one with the last big chunk which requires more thinking, especially on our side (the book was written a long ago, we need to put your change into context to review it).

Thanks again for your contribution.

…derstanding.
* Again, \C{compute} -> \C{Compute} since the two are not the same (right?) and it is the latter that is being used.
@darijgr

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@gares Done what you said. Now this branch has the relatively straightforward edits, whereas the implicit argument rewrite is at https://github.com/darijgr/mcb/tree/sugg2b .

Comment threadtex/chProgramming.tex Outdated
case, the result of the function is zero. We can view
\C{subn} as a subtraction operation on natural numbers, artificially
made total by providing a default value in the cases where it would
normally produce a negative number.

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This is misleading, IMO, because "subtraction operation on natural numbers" cannot "produce a negative number".
I think that both "made total" and "truncated" are good ways to express what it does.
As a CS person, I clearly see total as more natural, but if a reference to truncated subtraction can help the Math inclined reader I suggest we have both.

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What do you think of the new version?

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try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
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further corrections(?) - #137

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darijgr wants to merge 3 commits into
math-comp:masterfrom
darijgr:sugg2
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further corrections(?)#137
darijgr wants to merge 3 commits into
math-comp:masterfrom
darijgr:sugg2

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@darijgr

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  • More little examples and parentheticals to help the reader check understanding.

  • Again, \C{compute} -> \C{Compute} since the two are not the same (right?) and it is the latter that is being used.

  • I think the syntactic sugar in the definition of same_bool is expanded more like I suggest than like the previous text suggests (even though the resulting functions, of course, are
    equivalent). Is that so?

  • Experimental rewrite of the paragraphs on implicit argument. Currently, "About cons" does NOT say anything about "implicit" or "maximally inserted" arguments (at least not on my
    installation). Thus I removed the mention of "About" here (it should be introduced somewhere, maybe in a separate subsection about Evaluate, Search, About and friends). On the
    other hand, I have added the (A := U) notation for manually providing implicit arguments.

Comment threadtex/chProgramming.tex Outdated
@gares

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Thanks, I'll carefully review this pr later today

Comment threadtex/chProgramming.tex
Comment threadtex/chProgramming.tex Outdated
Comment threadtex/chProgramming.tex
Comment threadtex/chProgramming.tex
case, the result of the function is zero. Another possible view on
\C{subn} it to see it as a subtraction operation on natural numbers,
made total by providing a default value in the ``exceptional'' cases.
case, the result of the function is zero. We can view

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I don't approve this change

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The change goes on for a few more lines -- I reworded rather than removed this sentence. I was trying to remove the word "exceptional" since I found it somewhat counterintuitive to think of 1/2 of all possible inputs as "exceptional". But I don't have a strong preference either way.

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Another way to state this behavior precisely is saying that the subtraction is truncated at 0. See monus.

Comment threadtex/chProgramming.tex Outdated
Comment threadtex/chProgramming.tex Outdated

The name \C{seq} refers to (finite) ``sequences'', also called
``lists''. This definition actually describes the type
``lists''. This definition describes the type

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I don't approve this change.

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What does the word "actually" mean for you? To me it means that we are making things more correct or more precise, so I don't understand its meaning in this sentence (there is nothing wrong about "sequences" or "lists").

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Sorry, one of my comment was misplaced. I hope it is correct now.

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"actually" refers to the fact "seq" is only a synonym for "list".

The situation is not very satisfactory, because if we type "Print list." in Coq, we get the following text:

Inductive list (A : Type) : Type := nil : seq A | cons : A -> seq A -> seq A

So "list" is used in the first part, and "seq" is used after the ":=" characters. This is messy at best.

Comment threadtex/chProgramming.tex Outdated
@gares

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@darijgr I had a little chat with @ybertot and we believe that the best way forward for this PR is that you split into two parts: one containing the minor fixes, typos, etc which can be merged fast, and another one with the last big chunk which requires more thinking, especially on our side (the book was written a long ago, we need to put your change into context to review it).

Thanks again for your contribution.

…derstanding.
* Again, \C{compute} -> \C{Compute} since the two are not the same (right?) and it is the latter that is being used.
@darijgr

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@gares Done what you said. Now this branch has the relatively straightforward edits, whereas the implicit argument rewrite is at https://github.com/darijgr/mcb/tree/sugg2b .

Comment threadtex/chProgramming.tex Outdated
case, the result of the function is zero. We can view
\C{subn} as a subtraction operation on natural numbers, artificially
made total by providing a default value in the cases where it would
normally produce a negative number.

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This is misleading, IMO, because "subtraction operation on natural numbers" cannot "produce a negative number".
I think that both "made total" and "truncated" are good ways to express what it does.
As a CS person, I clearly see total as more natural, but if a reference to truncated subtraction can help the Math inclined reader I suggest we have both.

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What do you think of the new version?

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix"); } } catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
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further corrections(?) - #137

Open
darijgr wants to merge 3 commits into
math-comp:masterfrom
darijgr:sugg2
Open

further corrections(?)#137
darijgr wants to merge 3 commits into
math-comp:masterfrom
darijgr:sugg2

Conversation

@darijgr

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  • More little examples and parentheticals to help the reader check understanding.

  • Again, \C{compute} -> \C{Compute} since the two are not the same (right?) and it is the latter that is being used.

  • I think the syntactic sugar in the definition of same_bool is expanded more like I suggest than like the previous text suggests (even though the resulting functions, of course, are
    equivalent). Is that so?

  • Experimental rewrite of the paragraphs on implicit argument. Currently, "About cons" does NOT say anything about "implicit" or "maximally inserted" arguments (at least not on my
    installation). Thus I removed the mention of "About" here (it should be introduced somewhere, maybe in a separate subsection about Evaluate, Search, About and friends). On the
    other hand, I have added the (A := U) notation for manually providing implicit arguments.

Comment threadtex/chProgramming.tex Outdated
@gares

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Thanks, I'll carefully review this pr later today

Comment threadtex/chProgramming.tex
Comment threadtex/chProgramming.tex Outdated
Comment threadtex/chProgramming.tex
Comment threadtex/chProgramming.tex
case, the result of the function is zero. Another possible view on
\C{subn} it to see it as a subtraction operation on natural numbers,
made total by providing a default value in the ``exceptional'' cases.
case, the result of the function is zero. We can view

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I don't approve this change

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The change goes on for a few more lines -- I reworded rather than removed this sentence. I was trying to remove the word "exceptional" since I found it somewhat counterintuitive to think of 1/2 of all possible inputs as "exceptional". But I don't have a strong preference either way.

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Another way to state this behavior precisely is saying that the subtraction is truncated at 0. See monus.

Comment threadtex/chProgramming.tex Outdated
Comment threadtex/chProgramming.tex Outdated

The name \C{seq} refers to (finite) ``sequences'', also called
``lists''. This definition actually describes the type
``lists''. This definition describes the type

Copy link
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I don't approve this change.

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What does the word "actually" mean for you? To me it means that we are making things more correct or more precise, so I don't understand its meaning in this sentence (there is nothing wrong about "sequences" or "lists").

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Sorry, one of my comment was misplaced. I hope it is correct now.

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"actually" refers to the fact "seq" is only a synonym for "list".

The situation is not very satisfactory, because if we type "Print list." in Coq, we get the following text:

Inductive list (A : Type) : Type := nil : seq A | cons : A -> seq A -> seq A

So "list" is used in the first part, and "seq" is used after the ":=" characters. This is messy at best.

Comment threadtex/chProgramming.tex Outdated
@gares

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@darijgr I had a little chat with @ybertot and we believe that the best way forward for this PR is that you split into two parts: one containing the minor fixes, typos, etc which can be merged fast, and another one with the last big chunk which requires more thinking, especially on our side (the book was written a long ago, we need to put your change into context to review it).

Thanks again for your contribution.

…derstanding.
* Again, \C{compute} -> \C{Compute} since the two are not the same (right?) and it is the latter that is being used.
@darijgr

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ContributorAuthor

@gares Done what you said. Now this branch has the relatively straightforward edits, whereas the implicit argument rewrite is at https://github.com/darijgr/mcb/tree/sugg2b .

Comment threadtex/chProgramming.tex Outdated
case, the result of the function is zero. We can view
\C{subn} as a subtraction operation on natural numbers, artificially
made total by providing a default value in the cases where it would
normally produce a negative number.

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Member

Choose a reason for hiding this comment

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This is misleading, IMO, because "subtraction operation on natural numbers" cannot "produce a negative number".
I think that both "made total" and "truncated" are good ways to express what it does.
As a CS person, I clearly see total as more natural, but if a reference to truncated subtraction can help the Math inclined reader I suggest we have both.

Copy link
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ContributorAuthor

Choose a reason for hiding this comment

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What do you think of the new version?

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4 participants

@darijgr@gares@ybertot@siraben
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further corrections(?) - #137

Open
darijgr wants to merge 3 commits into
math-comp:masterfrom
darijgr:sugg2
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further corrections(?)#137
darijgr wants to merge 3 commits into
math-comp:masterfrom
darijgr:sugg2

Conversation

@darijgr

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  • More little examples and parentheticals to help the reader check understanding.

  • Again, \C{compute} -> \C{Compute} since the two are not the same (right?) and it is the latter that is being used.

  • I think the syntactic sugar in the definition of same_bool is expanded more like I suggest than like the previous text suggests (even though the resulting functions, of course, are
    equivalent). Is that so?

  • Experimental rewrite of the paragraphs on implicit argument. Currently, "About cons" does NOT say anything about "implicit" or "maximally inserted" arguments (at least not on my
    installation). Thus I removed the mention of "About" here (it should be introduced somewhere, maybe in a separate subsection about Evaluate, Search, About and friends). On the
    other hand, I have added the (A := U) notation for manually providing implicit arguments.

Comment threadtex/chProgramming.tex Outdated
@gares

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Thanks, I'll carefully review this pr later today

Comment threadtex/chProgramming.tex
Comment threadtex/chProgramming.tex Outdated
Comment threadtex/chProgramming.tex
Comment threadtex/chProgramming.tex
case, the result of the function is zero. Another possible view on
\C{subn} it to see it as a subtraction operation on natural numbers,
made total by providing a default value in the ``exceptional'' cases.
case, the result of the function is zero. We can view

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I don't approve this change

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The change goes on for a few more lines -- I reworded rather than removed this sentence. I was trying to remove the word "exceptional" since I found it somewhat counterintuitive to think of 1/2 of all possible inputs as "exceptional". But I don't have a strong preference either way.

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Another way to state this behavior precisely is saying that the subtraction is truncated at 0. See monus.

Comment threadtex/chProgramming.tex Outdated
Comment threadtex/chProgramming.tex Outdated

The name \C{seq} refers to (finite) ``sequences'', also called
``lists''. This definition actually describes the type
``lists''. This definition describes the type

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Member

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I don't approve this change.

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What does the word "actually" mean for you? To me it means that we are making things more correct or more precise, so I don't understand its meaning in this sentence (there is nothing wrong about "sequences" or "lists").

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Sorry, one of my comment was misplaced. I hope it is correct now.

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"actually" refers to the fact "seq" is only a synonym for "list".

The situation is not very satisfactory, because if we type "Print list." in Coq, we get the following text:

Inductive list (A : Type) : Type := nil : seq A | cons : A -> seq A -> seq A

So "list" is used in the first part, and "seq" is used after the ":=" characters. This is messy at best.

Comment threadtex/chProgramming.tex Outdated
@gares

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@darijgr I had a little chat with @ybertot and we believe that the best way forward for this PR is that you split into two parts: one containing the minor fixes, typos, etc which can be merged fast, and another one with the last big chunk which requires more thinking, especially on our side (the book was written a long ago, we need to put your change into context to review it).

Thanks again for your contribution.

…derstanding.
* Again, \C{compute} -> \C{Compute} since the two are not the same (right?) and it is the latter that is being used.
@darijgr

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ContributorAuthor

@gares Done what you said. Now this branch has the relatively straightforward edits, whereas the implicit argument rewrite is at https://github.com/darijgr/mcb/tree/sugg2b .

Comment threadtex/chProgramming.tex Outdated
case, the result of the function is zero. We can view
\C{subn} as a subtraction operation on natural numbers, artificially
made total by providing a default value in the cases where it would
normally produce a negative number.

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Member

Choose a reason for hiding this comment

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This is misleading, IMO, because "subtraction operation on natural numbers" cannot "produce a negative number".
I think that both "made total" and "truncated" are good ways to express what it does.
As a CS person, I clearly see total as more natural, but if a reference to truncated subtraction can help the Math inclined reader I suggest we have both.

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ContributorAuthor

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What do you think of the new version?

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@darijgr@gares@ybertot@siraben
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links"); } } catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); } })(); (function(){ try { var __m = "youtube.com"; var __re = new RegExp('^' + "youtube\\.com" + '
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further corrections(?) - #137

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darijgr wants to merge 3 commits into
math-comp:masterfrom
darijgr:sugg2
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further corrections(?)#137
darijgr wants to merge 3 commits into
math-comp:masterfrom
darijgr:sugg2

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  • More little examples and parentheticals to help the reader check understanding.

  • Again, \C{compute} -> \C{Compute} since the two are not the same (right?) and it is the latter that is being used.

  • I think the syntactic sugar in the definition of same_bool is expanded more like I suggest than like the previous text suggests (even though the resulting functions, of course, are
    equivalent). Is that so?

  • Experimental rewrite of the paragraphs on implicit argument. Currently, "About cons" does NOT say anything about "implicit" or "maximally inserted" arguments (at least not on my
    installation). Thus I removed the mention of "About" here (it should be introduced somewhere, maybe in a separate subsection about Evaluate, Search, About and friends). On the
    other hand, I have added the (A := U) notation for manually providing implicit arguments.

Comment threadtex/chProgramming.tex Outdated
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Thanks, I'll carefully review this pr later today

Comment threadtex/chProgramming.tex
Comment threadtex/chProgramming.tex Outdated
Comment threadtex/chProgramming.tex
Comment threadtex/chProgramming.tex
case, the result of the function is zero. Another possible view on
\C{subn} it to see it as a subtraction operation on natural numbers,
made total by providing a default value in the ``exceptional'' cases.
case, the result of the function is zero. We can view

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I don't approve this change

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The change goes on for a few more lines -- I reworded rather than removed this sentence. I was trying to remove the word "exceptional" since I found it somewhat counterintuitive to think of 1/2 of all possible inputs as "exceptional". But I don't have a strong preference either way.

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Another way to state this behavior precisely is saying that the subtraction is truncated at 0. See monus.

Comment threadtex/chProgramming.tex Outdated
Comment threadtex/chProgramming.tex Outdated

The name \C{seq} refers to (finite) ``sequences'', also called
``lists''. This definition actually describes the type
``lists''. This definition describes the type

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I don't approve this change.

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What does the word "actually" mean for you? To me it means that we are making things more correct or more precise, so I don't understand its meaning in this sentence (there is nothing wrong about "sequences" or "lists").

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Sorry, one of my comment was misplaced. I hope it is correct now.

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"actually" refers to the fact "seq" is only a synonym for "list".

The situation is not very satisfactory, because if we type "Print list." in Coq, we get the following text:

Inductive list (A : Type) : Type := nil : seq A | cons : A -> seq A -> seq A

So "list" is used in the first part, and "seq" is used after the ":=" characters. This is messy at best.

Comment threadtex/chProgramming.tex Outdated
@gares

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@darijgr I had a little chat with @ybertot and we believe that the best way forward for this PR is that you split into two parts: one containing the minor fixes, typos, etc which can be merged fast, and another one with the last big chunk which requires more thinking, especially on our side (the book was written a long ago, we need to put your change into context to review it).

Thanks again for your contribution.

…derstanding.
* Again, \C{compute} -> \C{Compute} since the two are not the same (right?) and it is the latter that is being used.
@darijgr

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@gares Done what you said. Now this branch has the relatively straightforward edits, whereas the implicit argument rewrite is at https://github.com/darijgr/mcb/tree/sugg2b .

Comment threadtex/chProgramming.tex Outdated
case, the result of the function is zero. We can view
\C{subn} as a subtraction operation on natural numbers, artificially
made total by providing a default value in the cases where it would
normally produce a negative number.

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This is misleading, IMO, because "subtraction operation on natural numbers" cannot "produce a negative number".
I think that both "made total" and "truncated" are good ways to express what it does.
As a CS person, I clearly see total as more natural, but if a reference to truncated subtraction can help the Math inclined reader I suggest we have both.

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What do you think of the new version?

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default"); } } catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
Skip to content

further corrections(?) - #137

Open
darijgr wants to merge 3 commits into
math-comp:masterfrom
darijgr:sugg2
Open

further corrections(?)#137
darijgr wants to merge 3 commits into
math-comp:masterfrom
darijgr:sugg2

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@darijgr

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  • More little examples and parentheticals to help the reader check understanding.

  • Again, \C{compute} -> \C{Compute} since the two are not the same (right?) and it is the latter that is being used.

  • I think the syntactic sugar in the definition of same_bool is expanded more like I suggest than like the previous text suggests (even though the resulting functions, of course, are
    equivalent). Is that so?

  • Experimental rewrite of the paragraphs on implicit argument. Currently, "About cons" does NOT say anything about "implicit" or "maximally inserted" arguments (at least not on my
    installation). Thus I removed the mention of "About" here (it should be introduced somewhere, maybe in a separate subsection about Evaluate, Search, About and friends). On the
    other hand, I have added the (A := U) notation for manually providing implicit arguments.

Comment threadtex/chProgramming.tex Outdated
@gares

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Thanks, I'll carefully review this pr later today

Comment threadtex/chProgramming.tex
Comment threadtex/chProgramming.tex Outdated
Comment threadtex/chProgramming.tex
Comment threadtex/chProgramming.tex
case, the result of the function is zero. Another possible view on
\C{subn} it to see it as a subtraction operation on natural numbers,
made total by providing a default value in the ``exceptional'' cases.
case, the result of the function is zero. We can view

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I don't approve this change

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The change goes on for a few more lines -- I reworded rather than removed this sentence. I was trying to remove the word "exceptional" since I found it somewhat counterintuitive to think of 1/2 of all possible inputs as "exceptional". But I don't have a strong preference either way.

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Another way to state this behavior precisely is saying that the subtraction is truncated at 0. See monus.

Comment threadtex/chProgramming.tex Outdated
Comment threadtex/chProgramming.tex Outdated

The name \C{seq} refers to (finite) ``sequences'', also called
``lists''. This definition actually describes the type
``lists''. This definition describes the type

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I don't approve this change.

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What does the word "actually" mean for you? To me it means that we are making things more correct or more precise, so I don't understand its meaning in this sentence (there is nothing wrong about "sequences" or "lists").

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Sorry, one of my comment was misplaced. I hope it is correct now.

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"actually" refers to the fact "seq" is only a synonym for "list".

The situation is not very satisfactory, because if we type "Print list." in Coq, we get the following text:

Inductive list (A : Type) : Type := nil : seq A | cons : A -> seq A -> seq A

So "list" is used in the first part, and "seq" is used after the ":=" characters. This is messy at best.

Comment threadtex/chProgramming.tex Outdated
@gares

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@darijgr I had a little chat with @ybertot and we believe that the best way forward for this PR is that you split into two parts: one containing the minor fixes, typos, etc which can be merged fast, and another one with the last big chunk which requires more thinking, especially on our side (the book was written a long ago, we need to put your change into context to review it).

Thanks again for your contribution.

…derstanding.
* Again, \C{compute} -> \C{Compute} since the two are not the same (right?) and it is the latter that is being used.
@darijgr

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@gares Done what you said. Now this branch has the relatively straightforward edits, whereas the implicit argument rewrite is at https://github.com/darijgr/mcb/tree/sugg2b .

Comment threadtex/chProgramming.tex Outdated
case, the result of the function is zero. We can view
\C{subn} as a subtraction operation on natural numbers, artificially
made total by providing a default value in the cases where it would
normally produce a negative number.

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Member

Choose a reason for hiding this comment

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This is misleading, IMO, because "subtraction operation on natural numbers" cannot "produce a negative number".
I think that both "made total" and "truncated" are good ways to express what it does.
As a CS person, I clearly see total as more natural, but if a reference to truncated subtraction can help the Math inclined reader I suggest we have both.

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What do you think of the new version?

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@darijgr@gares@ybertot@siraben
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers"); } } catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
Skip to content

further corrections(?) - #137

Open
darijgr wants to merge 3 commits into
math-comp:masterfrom
darijgr:sugg2
Open

further corrections(?)#137
darijgr wants to merge 3 commits into
math-comp:masterfrom
darijgr:sugg2

Conversation

@darijgr

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  • More little examples and parentheticals to help the reader check understanding.

  • Again, \C{compute} -> \C{Compute} since the two are not the same (right?) and it is the latter that is being used.

  • I think the syntactic sugar in the definition of same_bool is expanded more like I suggest than like the previous text suggests (even though the resulting functions, of course, are
    equivalent). Is that so?

  • Experimental rewrite of the paragraphs on implicit argument. Currently, "About cons" does NOT say anything about "implicit" or "maximally inserted" arguments (at least not on my
    installation). Thus I removed the mention of "About" here (it should be introduced somewhere, maybe in a separate subsection about Evaluate, Search, About and friends). On the
    other hand, I have added the (A := U) notation for manually providing implicit arguments.

Comment threadtex/chProgramming.tex Outdated
@gares

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Thanks, I'll carefully review this pr later today

Comment threadtex/chProgramming.tex
Comment threadtex/chProgramming.tex Outdated
Comment threadtex/chProgramming.tex
Comment threadtex/chProgramming.tex
case, the result of the function is zero. Another possible view on
\C{subn} it to see it as a subtraction operation on natural numbers,
made total by providing a default value in the ``exceptional'' cases.
case, the result of the function is zero. We can view

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I don't approve this change

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The change goes on for a few more lines -- I reworded rather than removed this sentence. I was trying to remove the word "exceptional" since I found it somewhat counterintuitive to think of 1/2 of all possible inputs as "exceptional". But I don't have a strong preference either way.

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Another way to state this behavior precisely is saying that the subtraction is truncated at 0. See monus.

Comment threadtex/chProgramming.tex Outdated
Comment threadtex/chProgramming.tex Outdated

The name \C{seq} refers to (finite) ``sequences'', also called
``lists''. This definition actually describes the type
``lists''. This definition describes the type

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I don't approve this change.

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What does the word "actually" mean for you? To me it means that we are making things more correct or more precise, so I don't understand its meaning in this sentence (there is nothing wrong about "sequences" or "lists").

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Sorry, one of my comment was misplaced. I hope it is correct now.

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"actually" refers to the fact "seq" is only a synonym for "list".

The situation is not very satisfactory, because if we type "Print list." in Coq, we get the following text:

Inductive list (A : Type) : Type := nil : seq A | cons : A -> seq A -> seq A

So "list" is used in the first part, and "seq" is used after the ":=" characters. This is messy at best.

Comment threadtex/chProgramming.tex Outdated
@gares

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@darijgr I had a little chat with @ybertot and we believe that the best way forward for this PR is that you split into two parts: one containing the minor fixes, typos, etc which can be merged fast, and another one with the last big chunk which requires more thinking, especially on our side (the book was written a long ago, we need to put your change into context to review it).

Thanks again for your contribution.

…derstanding.
* Again, \C{compute} -> \C{Compute} since the two are not the same (right?) and it is the latter that is being used.
@darijgr

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ContributorAuthor

@gares Done what you said. Now this branch has the relatively straightforward edits, whereas the implicit argument rewrite is at https://github.com/darijgr/mcb/tree/sugg2b .

Comment threadtex/chProgramming.tex Outdated
case, the result of the function is zero. We can view
\C{subn} as a subtraction operation on natural numbers, artificially
made total by providing a default value in the cases where it would
normally produce a negative number.

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Member

Choose a reason for hiding this comment

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This is misleading, IMO, because "subtraction operation on natural numbers" cannot "produce a negative number".
I think that both "made total" and "truncated" are good ways to express what it does.
As a CS person, I clearly see total as more natural, but if a reference to truncated subtraction can help the Math inclined reader I suggest we have both.

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ContributorAuthor

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What do you think of the new version?

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4 participants

@darijgr@gares@ybertot@siraben
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode"); } } catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); } })(); })();
Skip to content

further corrections(?) - #137

Open
darijgr wants to merge 3 commits into
math-comp:masterfrom
darijgr:sugg2
Open

further corrections(?)#137
darijgr wants to merge 3 commits into
math-comp:masterfrom
darijgr:sugg2

Conversation

@darijgr

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  • More little examples and parentheticals to help the reader check understanding.

  • Again, \C{compute} -> \C{Compute} since the two are not the same (right?) and it is the latter that is being used.

  • I think the syntactic sugar in the definition of same_bool is expanded more like I suggest than like the previous text suggests (even though the resulting functions, of course, are
    equivalent). Is that so?

  • Experimental rewrite of the paragraphs on implicit argument. Currently, "About cons" does NOT say anything about "implicit" or "maximally inserted" arguments (at least not on my
    installation). Thus I removed the mention of "About" here (it should be introduced somewhere, maybe in a separate subsection about Evaluate, Search, About and friends). On the
    other hand, I have added the (A := U) notation for manually providing implicit arguments.

Comment threadtex/chProgramming.tex Outdated
@gares

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Thanks, I'll carefully review this pr later today

Comment threadtex/chProgramming.tex
Comment threadtex/chProgramming.tex Outdated
Comment threadtex/chProgramming.tex
Comment threadtex/chProgramming.tex
case, the result of the function is zero. Another possible view on
\C{subn} it to see it as a subtraction operation on natural numbers,
made total by providing a default value in the ``exceptional'' cases.
case, the result of the function is zero. We can view

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I don't approve this change

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The change goes on for a few more lines -- I reworded rather than removed this sentence. I was trying to remove the word "exceptional" since I found it somewhat counterintuitive to think of 1/2 of all possible inputs as "exceptional". But I don't have a strong preference either way.

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Another way to state this behavior precisely is saying that the subtraction is truncated at 0. See monus.

Comment threadtex/chProgramming.tex Outdated
Comment threadtex/chProgramming.tex Outdated

The name \C{seq} refers to (finite) ``sequences'', also called
``lists''. This definition actually describes the type
``lists''. This definition describes the type

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I don't approve this change.

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What does the word "actually" mean for you? To me it means that we are making things more correct or more precise, so I don't understand its meaning in this sentence (there is nothing wrong about "sequences" or "lists").

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Sorry, one of my comment was misplaced. I hope it is correct now.

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"actually" refers to the fact "seq" is only a synonym for "list".

The situation is not very satisfactory, because if we type "Print list." in Coq, we get the following text:

Inductive list (A : Type) : Type := nil : seq A | cons : A -> seq A -> seq A

So "list" is used in the first part, and "seq" is used after the ":=" characters. This is messy at best.

Comment threadtex/chProgramming.tex Outdated
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@darijgr I had a little chat with @ybertot and we believe that the best way forward for this PR is that you split into two parts: one containing the minor fixes, typos, etc which can be merged fast, and another one with the last big chunk which requires more thinking, especially on our side (the book was written a long ago, we need to put your change into context to review it).

Thanks again for your contribution.

…derstanding.
* Again, \C{compute} -> \C{Compute} since the two are not the same (right?) and it is the latter that is being used.
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@gares Done what you said. Now this branch has the relatively straightforward edits, whereas the implicit argument rewrite is at https://github.com/darijgr/mcb/tree/sugg2b .

Comment threadtex/chProgramming.tex Outdated
case, the result of the function is zero. We can view
\C{subn} as a subtraction operation on natural numbers, artificially
made total by providing a default value in the cases where it would
normally produce a negative number.

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This is misleading, IMO, because "subtraction operation on natural numbers" cannot "produce a negative number".
I think that both "made total" and "truncated" are good ways to express what it does.
As a CS person, I clearly see total as more natural, but if a reference to truncated subtraction can help the Math inclined reader I suggest we have both.

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What do you think of the new version?

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@darijgr@gares@ybertot@siraben