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ARROW-12717: [C++][Python] Add find_substring kernel - #10353
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lidavidm wants to merge 3 commits into
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cyb70289
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May 19, 2021
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LGTM, +1.
A dedicated FindSubstringOptions looks better but can be postponed when we want to implement rfind.
lidavidm
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May 19, 2021
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A thought I had is that we could/should support binary/large_binary too. And, we may want to output int32 instead of int64 for the non-large_ arrays. |
lidavidm
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May 19, 2021
MemberAuthor
Updated to support binary/large_binary and to output int32 for non-large types. I'm still postponing regex find/rfind for a different issue. Though, I'm not sure if we want rfind to be an option of this kernel or its own kernel. |
lidavidm
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May 21, 2021
MemberAuthor
Rebased and fixed conflicts. |
ianmcook
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May 21, 2021
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lidavidm
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May 21, 2021
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Let's merge this one first, then I'll fix up the other (though it's no big deal either way). |
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This adds a very simple lfind kernel. If the substring is not found, -1 is reported. Nulls are propagated. Regexes are not supported, nor is rfind.