On 2022年5月16日 14:22:44 +0200 Victor Stinner <[email protected]> wrote: > On Mon, May 16, 2022 at 2:11 PM Antoine Pitrou <[email protected]> wrote: > > > PyUnicodeBuilder_Init(&builder); > > > > > > // Overallocation is more efficient if the final length is > > > unknown > > > PyUnicodeBuilder_EnableOverallocation(&builder); > > > PyUnicodeBuilder_WriteStr(&builder, key); > > > PyUnicodeBuilder_WriteChar(&builder, '='); > > > > > > // Disable overallocation before the last write > > > PyUnicodeBuilder_DisableOverallocation(&builder); > > > > Having to manually enable or disable overallocation doesn't sound right. > > Overallocation should be done *before* writing, not after. If there are > > N bytes remaining and you write N bytes, then no reallocation should > > occur. > > Calling these functions has no immediate effect on the current buffer. > EnableOverallocation() doesn't enlarge the buffer. Even if the buffer > is currently "over allocated", DisableOverallocation() leaves the > buffer unchanged. Only the next writes will use a different strategy > depending on the current setting. Only the Finish() function shrinks > the buffer.
Hmm, it appears I had misread the example. Sorry for the noise. Regards Antoine. _______________________________________________ Python-Dev mailing list -- [email protected] To unsubscribe send an email to [email protected] https://mail.python.org/mailman3/lists/python-dev.python.org/ Message archived at https://mail.python.org/archives/list/[email protected]/message/DJU5TQN5CPKYITWU7R5AJOT7MF7A5V3X/ Code of Conduct: http://python.org/psf/codeofconduct/