3 ms·

> I think it would be faster to OR the entire string with itself, then finally check the 8th bit though. The string could have NUL (zero) bytes in between.

• zbjornson 8y ago
  You're right that it changes the behavior vs. what the current implementation is, but 0x0 is a valid ASCII character.
  • vardump 8y ago
    While you're technically right NUL is a part of ASCII set in practise it's rarely wanted in the data.