| commit | b0b7e53f5d1a4cc7ab45dfb64d86f0afc387b843 | [log] [tgz] |
|---|---|---|
| author | Stiopa Koltsov <stepan.koltsov@gmail.com> | Mon Nov 16 15:00:25 2020 -0800 |
| committer | Copybara-Service <copybara-worker@google.com> | Mon Nov 16 15:02:35 2020 -0800 |
| tree | 0a3955b3ec1516116595738bb7ec47f989a558d1 | |
| parent | 7d52cc518d6b56b8cab90059f68e808e60f96346 [diff] |
Starlark: microoptimize str[index]
Preallocate single-char ASCII strings.
```
def test():
for i in range(1000000):
s = "abcdefghijklmnopqrstuvwxyz"
for j in range(len(s)):
s[j]
test()
```
```
A: N=48, r=3.896+-0.475
B: N=48, r=3.516+-0.571
B/A: 0.902
```
Closes #12490.
PiperOrigin-RevId: 342728476
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