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Go subtleties

(harrisoncramer.me)
235 points darccio | 2 comments | 13 Oct 25 07:42 UTC | HN request time: 0.001s | source
1. johnmaguire ◴[22 Oct 25 16:14 UTC] No.45671374[source]▶
> Using len() with Strings, and UTF-8 Gotchas

Try utf8.RuneCountInString().

replies(1): >>45672551 #
2. gethly ◴[22 Oct 25 17:41 UTC] No.45672551[source]▶
Problem with this is that it requires the whole string to be iterated over, byte by byte, or rune by rune, whereas len() does no such thing as the length is stored in the underlying type.