[mypyc] Add __contains__ method to vec#21138
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This is used in interpreted code only, where it will speed up 'in' operations significantly. This is also added for consistency with built-in sequence types.
p-sawicki
approved these changes
Apr 1, 2026
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According to mypy_primer, this change doesn't affect type check results on a corpus of open source code. ✅ |
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This is used in interpreted/non-native code only, where it will speed up
'in' operations significantly. This is also added for consistency
with built-in sequence types.
I used coding agents assist but did changes in small increments and
reviewed each change manually.