Akira Matsuda 0b62535219 [ruby/logger] Prefer String#[0, 1] over [0..0]
[0..0] internally creates an extra Array object, and so is slower and much more memory consuming

https://github.com/ruby/logger/commit/20616ad34a
2022-05-05 19:09:49 +09:00
..
2022-03-17 17:28:33 +09:00