New submission from Inada Naoki <[email protected]>:
_PyUnicode_FromASCII(s, len) is faster than PyUnicode_FromString(s) because
PyUnicode_FromString() uses temporary _PyUnicodeWriter to support UTF-8.
But _PyUnicode_FromASCII("hello", strlen("hello"))` is not as easy as
`PyUnicode_FromString("hello")`.
_PyUnicode_FROM_ASCII() is simple macro which wraps _PyUnicode_FromASCII which
calls strlen() automatically:
```
/* Convenient wrapper for _PyUnicode_FromASCII */
#define _PyUnicode_FROM_ASCII(s) _PyUnicode_FromASCII((s), strlen(s))
```
I believe recent compilers optimize away calls of strlen().
----------
components: Interpreter Core
messages: 346115
nosy: inada.naoki
priority: normal
severity: normal
status: open
title: add _PyUnicode_FROM_ASCII macro
type: performance
versions: Python 3.9
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Python tracker <[email protected]>
<https://bugs.python.org/issue37348>
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