[mypyc] Add librt.strings.isdigit codepoint primitive#21504
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Wraps `Py_UNICODE_ISDIGIT` for the codepoint fast path, mirroring the already-merged `librt.strings.isspace` (python#21462). Microbenchmark on a 12 KB SQL fragment: mypyc-compiled `s[i].isdigit()` takes 0.070 ms; the codepoint path `c: i32 = i32(ord(s[i])); isdigit(c)` takes 0.044 ms, roughly 1.6x faster.
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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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2nd PR building #21418
Wraps
Py_UNICODE_ISDIGITfor the codepoint fast path, mirroring the already-mergedlibrt.strings.isspace.I've microbenchmarked both codepoint primitives and they're ~1.6x faster than their counterpart
strspecialized primitives.