Reposted by demn
JetBrains just merged my contribution to the Kotlin standard library. It's a rewrite of String.toFloatOrNull() to eliminate all allocations (~940 per call!) and go 225x faster on a Pixel 6. If you want to see how it was done: github.com/JetBrains/ko...
tl;dr regex out, hand-written parser in
tl;dr regex out, hand-written parser in
Optimize String.toFloatOrNull() by romainguy · Pull Request #5364 · JetBrains/kotlin
The existing implementation used a regular expression which caused memory allocations, which are expensive on mobile devices. In addition, a custom parser can outperform regular expressions.
The ne...
github.com
November 22, 2024 at 6:06 PM
JetBrains just merged my contribution to the Kotlin standard library. It's a rewrite of String.toFloatOrNull() to eliminate all allocations (~940 per call!) and go 225x faster on a Pixel 6. If you want to see how it was done: github.com/JetBrains/ko...
tl;dr regex out, hand-written parser in
tl;dr regex out, hand-written parser in