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HashDiff

RubyCode ClimateGem Version

Deep comparison of Ruby Hash objects

Installation

Add this line to your application's Gemfile:

gem 'hash_diff'

And then execute:

$ bundle

Or install it yourself as:

$ gem install hash_diff

Usage

Easily find the differences between two Ruby hashes.

left={foo: 'bar',bar: 'foo',nested: {foo: 'bar',bar: {one: 'foo1'}},num: 1,favorite_restaurant: "Shoney's"}right={foo: 'bar2',bar: 'foo2',nested: {foo: 'bar2',bar: {two: 'foo2'}},word: 'monkey',favorite_restaurant: nil}hash_diff=HashDiff::Comparison.new(left,right)

Comparison#diff returns the left and right side differences

hash_diff.diff# => { foo: ["bar", "bar2"], bar: ["foo", "foo2"], nested: { foo: ["bar", "bar2"], bar: { one: ["foo1", HashDiff::NO_VALUE], two: [HashDiff::NO_VALUE, "foo2"] } }, num: [1, HashDiff::NO_VALUE], word: [HashDiff::NO_VALUE, "monkey"], favorite_restaurant: ["Shoney's", nil] }

You can also compare two arrays. The comparison is sensitive to the order of the elements in the array.

Missing keys

When there is a key that exists on one side it will return HashDiff::NO_VALUE to represent a missing key.

Comparison#left_diff returns only the left side differences

hash_diff.left_diff# => {:foo=>"bar2", :bar=>"foo2", :nested=>{:foo=>"bar2", :bar=>{:one=>HashDiff::NO_VALUE, :two=>"foo2"}}, :num=>HashDiff::NO_VALUE, :favorite_restaurant=>nil, :word=>"monkey"}

Comparison#right_diff returns only the right side differences

hash_diff.right_diff# => {:foo=>"bar", :bar=>"foo", :nested=>{:foo=>"bar", :bar=>{:one=>"foo1", :two=>HashDiff::NO_VALUE}}, :num=>1, :favorite_restaurant=>"Shoney's", :word=>HashDiff::NO_VALUE}

You can also use these shorthand methods

HashDiff.diff(left,right)HashDiff.left_diff(left,right)HashDiff.right_diff(left,right)

Hash#diff is not provided by default, and monkey patching is frowned upon by some, but to provide a one way shorthand call HashDiff.patch!

# run prior to implementationHashDiff.patch!left={foo: 'bar',num: 1}right={foo: 'baz',num: 1}left.diff(right)# => { foo: 'baz' }

License

Authored by the Engineering Team of Coding ZEAL

Copyright (c) 2017 Zeal, LLC. Licensed under the MIT license.

Contributing

  1. Fork it
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create new Pull Request

About

Diff tool for deep Ruby hash comparison

Topics

hacktoberfest

Resources

Readme
MIT license
Activity
Custom properties

Stars

52 stars

Watchers

3 watching

Forks

12 forks
Report repository

Releases

Packages

Used by

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all 
 blocks
(function() {
function addCopyButtons() {
document.querySelectorAll('pre code').forEach(function(codeBlock) {
if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;
codeBlock.parentElement.setAttribute('data-copy-added', 'true');
var btn = document.createElement('button');
btn.textContent = 'Copy';
btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';
btn.onmouseover = function() { this.style.opacity = '1'; };
btn.onmouseout = function() { this.style.opacity = '0.7'; };
btn.onclick = function() {
navigator.clipboard.writeText(codeBlock.textContent).then(function() {
btn.textContent = 'Copied!';
setTimeout(function() { btn.textContent = 'Copy'; }, 1500);
});
};
codeBlock.parentElement.style.position = 'relative';
codeBlock.parentElement.appendChild(btn);
});
}
addCopyButtons();
// Re-run on dynamic content
var observer = new MutationObserver(addCopyButtons);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
GitHub - CodingZeal/hash_diff: Diff tool for deep Ruby hash comparison · GitHub
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This repository was archived by the owner on Oct 16, 2025. It is now read-only.

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HashDiff
RubyCode ClimateGem Version
Deep comparison of Ruby Hash objects
Installation
Add this line to your application's Gemfile:
gem 'hash_diff'

And then execute:
$ bundle

Or install it yourself as:
$ gem install hash_diff

Usage
Easily find the differences between two Ruby hashes.
left={foo: 'bar',bar: 'foo',nested: {foo: 'bar',bar: {one: 'foo1'}},num: 1,favorite_restaurant: "Shoney's"}right={foo: 'bar2',bar: 'foo2',nested: {foo: 'bar2',bar: {two: 'foo2'}},word: 'monkey',favorite_restaurant: nil}hash_diff=HashDiff::Comparison.new(left,right)
Comparison#diff returns the left and right side differences
hash_diff.diff# => { foo: ["bar", "bar2"], bar: ["foo", "foo2"], nested: { foo: ["bar", "bar2"], bar: { one: ["foo1", HashDiff::NO_VALUE], two: [HashDiff::NO_VALUE, "foo2"] } }, num: [1, HashDiff::NO_VALUE], word: [HashDiff::NO_VALUE, "monkey"], favorite_restaurant: ["Shoney's", nil] }
You can also compare two arrays. The comparison is sensitive to the order of the elements in the array.
Missing keys
When there is a key that exists on one side it will return HashDiff::NO_VALUE to represent a missing key.
Comparison#left_diff returns only the left side differences
hash_diff.left_diff# => {:foo=>"bar2", :bar=>"foo2", :nested=>{:foo=>"bar2", :bar=>{:one=>HashDiff::NO_VALUE, :two=>"foo2"}}, :num=>HashDiff::NO_VALUE, :favorite_restaurant=>nil, :word=>"monkey"}
Comparison#right_diff returns only the right side differences
hash_diff.right_diff# => {:foo=>"bar", :bar=>"foo", :nested=>{:foo=>"bar", :bar=>{:one=>"foo1", :two=>HashDiff::NO_VALUE}}, :num=>1, :favorite_restaurant=>"Shoney's", :word=>HashDiff::NO_VALUE}
You can also use these shorthand methods
HashDiff.diff(left,right)HashDiff.left_diff(left,right)HashDiff.right_diff(left,right)
Hash#diff is not provided by default, and monkey patching is frowned upon by some, but to provide a one way shorthand call HashDiff.patch!
# run prior to implementationHashDiff.patch!left={foo: 'bar',num: 1}right={foo: 'baz',num: 1}left.diff(right)# => { foo: 'baz' }
License
Authored by the Engineering Team of Coding ZEAL
Copyright (c) 2017 Zeal, LLC. Licensed under the MIT license.
Contributing
  1. Fork it
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create new Pull Request
About
Diff tool for deep Ruby hash comparison
Topics
hacktoberfest
Resources
Readme
MIT license
Activity
Custom properties
Stars
52 stars
Watchers
3 watching
Forks
12 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

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

This repository was archived by the owner on Oct 16, 2025. It is now read-only.

BranchesTags
Repository files navigation
HashDiff
RubyCode ClimateGem Version
Deep comparison of Ruby Hash objects
Installation
Add this line to your application's Gemfile:
gem 'hash_diff'

And then execute:
$ bundle

Or install it yourself as:
$ gem install hash_diff

Usage
Easily find the differences between two Ruby hashes.
left={foo: 'bar',bar: 'foo',nested: {foo: 'bar',bar: {one: 'foo1'}},num: 1,favorite_restaurant: "Shoney's"}right={foo: 'bar2',bar: 'foo2',nested: {foo: 'bar2',bar: {two: 'foo2'}},word: 'monkey',favorite_restaurant: nil}hash_diff=HashDiff::Comparison.new(left,right)
Comparison#diff returns the left and right side differences
hash_diff.diff# => { foo: ["bar", "bar2"], bar: ["foo", "foo2"], nested: { foo: ["bar", "bar2"], bar: { one: ["foo1", HashDiff::NO_VALUE], two: [HashDiff::NO_VALUE, "foo2"] } }, num: [1, HashDiff::NO_VALUE], word: [HashDiff::NO_VALUE, "monkey"], favorite_restaurant: ["Shoney's", nil] }
You can also compare two arrays. The comparison is sensitive to the order of the elements in the array.
Missing keys
When there is a key that exists on one side it will return HashDiff::NO_VALUE to represent a missing key.
Comparison#left_diff returns only the left side differences
hash_diff.left_diff# => {:foo=>"bar2", :bar=>"foo2", :nested=>{:foo=>"bar2", :bar=>{:one=>HashDiff::NO_VALUE, :two=>"foo2"}}, :num=>HashDiff::NO_VALUE, :favorite_restaurant=>nil, :word=>"monkey"}
Comparison#right_diff returns only the right side differences
hash_diff.right_diff# => {:foo=>"bar", :bar=>"foo", :nested=>{:foo=>"bar", :bar=>{:one=>"foo1", :two=>HashDiff::NO_VALUE}}, :num=>1, :favorite_restaurant=>"Shoney's", :word=>HashDiff::NO_VALUE}
You can also use these shorthand methods
HashDiff.diff(left,right)HashDiff.left_diff(left,right)HashDiff.right_diff(left,right)
Hash#diff is not provided by default, and monkey patching is frowned upon by some, but to provide a one way shorthand call HashDiff.patch!
# run prior to implementationHashDiff.patch!left={foo: 'bar',num: 1}right={foo: 'baz',num: 1}left.diff(right)# => { foo: 'baz' }
License
Authored by the Engineering Team of Coding ZEAL
Copyright (c) 2017 Zeal, LLC. Licensed under the MIT license.
Contributing
  1. Fork it
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create new Pull Request
About
Diff tool for deep Ruby hash comparison
Topics
hacktoberfest
Resources
Readme
MIT license
Activity
Custom properties
Stars
52 stars
Watchers
3 watching
Forks
12 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Highlight search terms from Google/DuckDuckGo/Bing referrer
(function() {
var ref = document.referrer;
var terms = [];
if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {
var url = new URL(ref);
var q = url.searchParams.get('q') || url.searchParams.get('p');
if (q) {
terms = q.split(/\s+/).filter(function(t) { return t.length > 2; });
}
}
if (terms.length === 0) return;
var style = document.createElement('style');
style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';
document.head.appendChild(style);
function highlight(node) {
if (node.nodeType === 3) { // text node
var text = node.textContent;
var found = false;
terms.forEach(function(term) {
var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi');
if (regex.test(text)) {
found = true;
var frag = document.createDocumentFragment();
var parts = text.split(regex);
parts.forEach(function(part, i) {
if (i % 2 === 0) {
frag.appendChild(document.createTextNode(part));
} else {
var span = document.createElement('span');
span.className = 'userscript-highlight';
span.textContent = part;
frag.appendChild(span);
}
});
node.parentNode.replaceChild(frag, node);
}
});
} else if (node.nodeType === 1 && node.childNodes) { // element
var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];
if (!skipTags.includes(node.tagName)) {
Array.from(node.childNodes).forEach(highlight);
}
}
}
highlight(document.body);
// Re-highlight on dynamic content
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1 || node.nodeType === 3) highlight(node);
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
GitHub - CodingZeal/hash_diff: Diff tool for deep Ruby hash comparison · GitHub
Skip to content

This repository was archived by the owner on Oct 16, 2025. It is now read-only.

BranchesTags
Repository files navigation
HashDiff
RubyCode ClimateGem Version
Deep comparison of Ruby Hash objects
Installation
Add this line to your application's Gemfile:
gem 'hash_diff'

And then execute:
$ bundle

Or install it yourself as:
$ gem install hash_diff

Usage
Easily find the differences between two Ruby hashes.
left={foo: 'bar',bar: 'foo',nested: {foo: 'bar',bar: {one: 'foo1'}},num: 1,favorite_restaurant: "Shoney's"}right={foo: 'bar2',bar: 'foo2',nested: {foo: 'bar2',bar: {two: 'foo2'}},word: 'monkey',favorite_restaurant: nil}hash_diff=HashDiff::Comparison.new(left,right)
Comparison#diff returns the left and right side differences
hash_diff.diff# => { foo: ["bar", "bar2"], bar: ["foo", "foo2"], nested: { foo: ["bar", "bar2"], bar: { one: ["foo1", HashDiff::NO_VALUE], two: [HashDiff::NO_VALUE, "foo2"] } }, num: [1, HashDiff::NO_VALUE], word: [HashDiff::NO_VALUE, "monkey"], favorite_restaurant: ["Shoney's", nil] }
You can also compare two arrays. The comparison is sensitive to the order of the elements in the array.
Missing keys
When there is a key that exists on one side it will return HashDiff::NO_VALUE to represent a missing key.
Comparison#left_diff returns only the left side differences
hash_diff.left_diff# => {:foo=>"bar2", :bar=>"foo2", :nested=>{:foo=>"bar2", :bar=>{:one=>HashDiff::NO_VALUE, :two=>"foo2"}}, :num=>HashDiff::NO_VALUE, :favorite_restaurant=>nil, :word=>"monkey"}
Comparison#right_diff returns only the right side differences
hash_diff.right_diff# => {:foo=>"bar", :bar=>"foo", :nested=>{:foo=>"bar", :bar=>{:one=>"foo1", :two=>HashDiff::NO_VALUE}}, :num=>1, :favorite_restaurant=>"Shoney's", :word=>HashDiff::NO_VALUE}
You can also use these shorthand methods
HashDiff.diff(left,right)HashDiff.left_diff(left,right)HashDiff.right_diff(left,right)
Hash#diff is not provided by default, and monkey patching is frowned upon by some, but to provide a one way shorthand call HashDiff.patch!
# run prior to implementationHashDiff.patch!left={foo: 'bar',num: 1}right={foo: 'baz',num: 1}left.diff(right)# => { foo: 'baz' }
License
Authored by the Engineering Team of Coding ZEAL
Copyright (c) 2017 Zeal, LLC. Licensed under the MIT license.
Contributing
  1. Fork it
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create new Pull Request
About
Diff tool for deep Ruby hash comparison
Topics
hacktoberfest
Resources
Readme
MIT license
Activity
Custom properties
Stars
52 stars
Watchers
3 watching
Forks
12 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

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

This repository was archived by the owner on Oct 16, 2025. It is now read-only.

BranchesTags
Repository files navigation
HashDiff
RubyCode ClimateGem Version
Deep comparison of Ruby Hash objects
Installation
Add this line to your application's Gemfile:
gem 'hash_diff'

And then execute:
$ bundle

Or install it yourself as:
$ gem install hash_diff

Usage
Easily find the differences between two Ruby hashes.
left={foo: 'bar',bar: 'foo',nested: {foo: 'bar',bar: {one: 'foo1'}},num: 1,favorite_restaurant: "Shoney's"}right={foo: 'bar2',bar: 'foo2',nested: {foo: 'bar2',bar: {two: 'foo2'}},word: 'monkey',favorite_restaurant: nil}hash_diff=HashDiff::Comparison.new(left,right)
Comparison#diff returns the left and right side differences
hash_diff.diff# => { foo: ["bar", "bar2"], bar: ["foo", "foo2"], nested: { foo: ["bar", "bar2"], bar: { one: ["foo1", HashDiff::NO_VALUE], two: [HashDiff::NO_VALUE, "foo2"] } }, num: [1, HashDiff::NO_VALUE], word: [HashDiff::NO_VALUE, "monkey"], favorite_restaurant: ["Shoney's", nil] }
You can also compare two arrays. The comparison is sensitive to the order of the elements in the array.
Missing keys
When there is a key that exists on one side it will return HashDiff::NO_VALUE to represent a missing key.
Comparison#left_diff returns only the left side differences
hash_diff.left_diff# => {:foo=>"bar2", :bar=>"foo2", :nested=>{:foo=>"bar2", :bar=>{:one=>HashDiff::NO_VALUE, :two=>"foo2"}}, :num=>HashDiff::NO_VALUE, :favorite_restaurant=>nil, :word=>"monkey"}
Comparison#right_diff returns only the right side differences
hash_diff.right_diff# => {:foo=>"bar", :bar=>"foo", :nested=>{:foo=>"bar", :bar=>{:one=>"foo1", :two=>HashDiff::NO_VALUE}}, :num=>1, :favorite_restaurant=>"Shoney's", :word=>HashDiff::NO_VALUE}
You can also use these shorthand methods
HashDiff.diff(left,right)HashDiff.left_diff(left,right)HashDiff.right_diff(left,right)
Hash#diff is not provided by default, and monkey patching is frowned upon by some, but to provide a one way shorthand call HashDiff.patch!
# run prior to implementationHashDiff.patch!left={foo: 'bar',num: 1}right={foo: 'baz',num: 1}left.diff(right)# => { foo: 'baz' }
License
Authored by the Engineering Team of Coding ZEAL
Copyright (c) 2017 Zeal, LLC. Licensed under the MIT license.
Contributing
  1. Fork it
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create new Pull Request
About
Diff tool for deep Ruby hash comparison
Topics
hacktoberfest
Resources
Readme
MIT license
Activity
Custom properties
Stars
52 stars
Watchers
3 watching
Forks
12 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

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

This repository was archived by the owner on Oct 16, 2025. It is now read-only.

BranchesTags
Repository files navigation
HashDiff
RubyCode ClimateGem Version
Deep comparison of Ruby Hash objects
Installation
Add this line to your application's Gemfile:
gem 'hash_diff'

And then execute:
$ bundle

Or install it yourself as:
$ gem install hash_diff

Usage
Easily find the differences between two Ruby hashes.
left={foo: 'bar',bar: 'foo',nested: {foo: 'bar',bar: {one: 'foo1'}},num: 1,favorite_restaurant: "Shoney's"}right={foo: 'bar2',bar: 'foo2',nested: {foo: 'bar2',bar: {two: 'foo2'}},word: 'monkey',favorite_restaurant: nil}hash_diff=HashDiff::Comparison.new(left,right)
Comparison#diff returns the left and right side differences
hash_diff.diff# => { foo: ["bar", "bar2"], bar: ["foo", "foo2"], nested: { foo: ["bar", "bar2"], bar: { one: ["foo1", HashDiff::NO_VALUE], two: [HashDiff::NO_VALUE, "foo2"] } }, num: [1, HashDiff::NO_VALUE], word: [HashDiff::NO_VALUE, "monkey"], favorite_restaurant: ["Shoney's", nil] }
You can also compare two arrays. The comparison is sensitive to the order of the elements in the array.
Missing keys
When there is a key that exists on one side it will return HashDiff::NO_VALUE to represent a missing key.
Comparison#left_diff returns only the left side differences
hash_diff.left_diff# => {:foo=>"bar2", :bar=>"foo2", :nested=>{:foo=>"bar2", :bar=>{:one=>HashDiff::NO_VALUE, :two=>"foo2"}}, :num=>HashDiff::NO_VALUE, :favorite_restaurant=>nil, :word=>"monkey"}
Comparison#right_diff returns only the right side differences
hash_diff.right_diff# => {:foo=>"bar", :bar=>"foo", :nested=>{:foo=>"bar", :bar=>{:one=>"foo1", :two=>HashDiff::NO_VALUE}}, :num=>1, :favorite_restaurant=>"Shoney's", :word=>HashDiff::NO_VALUE}
You can also use these shorthand methods
HashDiff.diff(left,right)HashDiff.left_diff(left,right)HashDiff.right_diff(left,right)
Hash#diff is not provided by default, and monkey patching is frowned upon by some, but to provide a one way shorthand call HashDiff.patch!
# run prior to implementationHashDiff.patch!left={foo: 'bar',num: 1}right={foo: 'baz',num: 1}left.diff(right)# => { foo: 'baz' }
License
Authored by the Engineering Team of Coding ZEAL
Copyright (c) 2017 Zeal, LLC. Licensed under the MIT license.
Contributing
  1. Fork it
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create new Pull Request
About
Diff tool for deep Ruby hash comparison
Topics
hacktoberfest
Resources
Readme
MIT license
Activity
Custom properties
Stars
52 stars
Watchers
3 watching
Forks
12 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
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try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
GitHub - CodingZeal/hash_diff: Diff tool for deep Ruby hash comparison · GitHub
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This repository was archived by the owner on Oct 16, 2025. It is now read-only.

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HashDiff
RubyCode ClimateGem Version
Deep comparison of Ruby Hash objects
Installation
Add this line to your application's Gemfile:
gem 'hash_diff'

And then execute:
$ bundle

Or install it yourself as:
$ gem install hash_diff

Usage
Easily find the differences between two Ruby hashes.
left={foo: 'bar',bar: 'foo',nested: {foo: 'bar',bar: {one: 'foo1'}},num: 1,favorite_restaurant: "Shoney's"}right={foo: 'bar2',bar: 'foo2',nested: {foo: 'bar2',bar: {two: 'foo2'}},word: 'monkey',favorite_restaurant: nil}hash_diff=HashDiff::Comparison.new(left,right)
Comparison#diff returns the left and right side differences
hash_diff.diff# => { foo: ["bar", "bar2"], bar: ["foo", "foo2"], nested: { foo: ["bar", "bar2"], bar: { one: ["foo1", HashDiff::NO_VALUE], two: [HashDiff::NO_VALUE, "foo2"] } }, num: [1, HashDiff::NO_VALUE], word: [HashDiff::NO_VALUE, "monkey"], favorite_restaurant: ["Shoney's", nil] }
You can also compare two arrays. The comparison is sensitive to the order of the elements in the array.
Missing keys
When there is a key that exists on one side it will return HashDiff::NO_VALUE to represent a missing key.
Comparison#left_diff returns only the left side differences
hash_diff.left_diff# => {:foo=>"bar2", :bar=>"foo2", :nested=>{:foo=>"bar2", :bar=>{:one=>HashDiff::NO_VALUE, :two=>"foo2"}}, :num=>HashDiff::NO_VALUE, :favorite_restaurant=>nil, :word=>"monkey"}
Comparison#right_diff returns only the right side differences
hash_diff.right_diff# => {:foo=>"bar", :bar=>"foo", :nested=>{:foo=>"bar", :bar=>{:one=>"foo1", :two=>HashDiff::NO_VALUE}}, :num=>1, :favorite_restaurant=>"Shoney's", :word=>HashDiff::NO_VALUE}
You can also use these shorthand methods
HashDiff.diff(left,right)HashDiff.left_diff(left,right)HashDiff.right_diff(left,right)
Hash#diff is not provided by default, and monkey patching is frowned upon by some, but to provide a one way shorthand call HashDiff.patch!
# run prior to implementationHashDiff.patch!left={foo: 'bar',num: 1}right={foo: 'baz',num: 1}left.diff(right)# => { foo: 'baz' }
License
Authored by the Engineering Team of Coding ZEAL
Copyright (c) 2017 Zeal, LLC. Licensed under the MIT license.
Contributing
  1. Fork it
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create new Pull Request
About
Diff tool for deep Ruby hash comparison
Topics
hacktoberfest
Resources
Readme
MIT license
Activity
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Stars
52 stars
Watchers
3 watching
Forks
12 forks
Report repository
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Used by
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// Universal Dark Mode - works on any site
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var enabled = true;
function applyDarkMode() {
if (!enabled) return;
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style.id = 'universal-dark-mode-style';
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filter: invert(1) hue-rotate(180deg) !important;
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pre code, pre code * {
filter: none !important;
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.modal, .popup, .dropdown-menu, .tooltip, .popover {
filter: invert(1) hue-rotate(180deg) !important;
background: #2d2d44 !important;
border-color: #444 !important;
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/* Scrollbars */
::-webkit-scrollbar { background: #1a1a2e !important; }
::-webkit-scrollbar-thumb { background: #444 !important; }
::-webkit-scrollbar-thumb:hover { background: #555 !important; }
/* Selection */
::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
';
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var style = document.getElementById('universal-dark-mode-style');
if (style) style.remove();
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if (e.altKey && e.shiftKey && e.key === 'D') {
e.preventDefault();
enabled = !enabled;
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applyDarkMode();
console.log('[Universal Dark Mode] Enabled');
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removeDarkMode();
console.log('[Universal Dark Mode] Disabled');
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applyDarkMode();
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var observer = new MutationObserver(function(mutations) {
if (enabled && !document.getElementById('universal-dark-mode-style')) {
applyDarkMode();
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});
observer.observe(document.head, { childList: true });
console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');
})();
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();
GitHub - CodingZeal/hash_diff: Diff tool for deep Ruby hash comparison · GitHub
Skip to content

This repository was archived by the owner on Oct 16, 2025. It is now read-only.

BranchesTags
Repository files navigation
HashDiff
RubyCode ClimateGem Version
Deep comparison of Ruby Hash objects
Installation
Add this line to your application's Gemfile:
gem 'hash_diff'

And then execute:
$ bundle

Or install it yourself as:
$ gem install hash_diff

Usage
Easily find the differences between two Ruby hashes.
left={foo: 'bar',bar: 'foo',nested: {foo: 'bar',bar: {one: 'foo1'}},num: 1,favorite_restaurant: "Shoney's"}right={foo: 'bar2',bar: 'foo2',nested: {foo: 'bar2',bar: {two: 'foo2'}},word: 'monkey',favorite_restaurant: nil}hash_diff=HashDiff::Comparison.new(left,right)
Comparison#diff returns the left and right side differences
hash_diff.diff# => { foo: ["bar", "bar2"], bar: ["foo", "foo2"], nested: { foo: ["bar", "bar2"], bar: { one: ["foo1", HashDiff::NO_VALUE], two: [HashDiff::NO_VALUE, "foo2"] } }, num: [1, HashDiff::NO_VALUE], word: [HashDiff::NO_VALUE, "monkey"], favorite_restaurant: ["Shoney's", nil] }
You can also compare two arrays. The comparison is sensitive to the order of the elements in the array.
Missing keys
When there is a key that exists on one side it will return HashDiff::NO_VALUE to represent a missing key.
Comparison#left_diff returns only the left side differences
hash_diff.left_diff# => {:foo=>"bar2", :bar=>"foo2", :nested=>{:foo=>"bar2", :bar=>{:one=>HashDiff::NO_VALUE, :two=>"foo2"}}, :num=>HashDiff::NO_VALUE, :favorite_restaurant=>nil, :word=>"monkey"}
Comparison#right_diff returns only the right side differences
hash_diff.right_diff# => {:foo=>"bar", :bar=>"foo", :nested=>{:foo=>"bar", :bar=>{:one=>"foo1", :two=>HashDiff::NO_VALUE}}, :num=>1, :favorite_restaurant=>"Shoney's", :word=>HashDiff::NO_VALUE}
You can also use these shorthand methods
HashDiff.diff(left,right)HashDiff.left_diff(left,right)HashDiff.right_diff(left,right)
Hash#diff is not provided by default, and monkey patching is frowned upon by some, but to provide a one way shorthand call HashDiff.patch!
# run prior to implementationHashDiff.patch!left={foo: 'bar',num: 1}right={foo: 'baz',num: 1}left.diff(right)# => { foo: 'baz' }
License
Authored by the Engineering Team of Coding ZEAL
Copyright (c) 2017 Zeal, LLC. Licensed under the MIT license.
Contributing
  1. Fork it
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create new Pull Request
About
Diff tool for deep Ruby hash comparison
Topics
hacktoberfest
Resources
Readme
MIT license
Activity
Custom properties
Stars
52 stars
Watchers
3 watching
Forks
12 forks
Report repository
Releases
Packages
Used by
Contributors
Languages