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find

String.find

(substring String, from i32)
 => 
option i32
find (utf8-byte-) index of 'substring' within this string.
0.095dev (2025-08-15 12:02:22 GIT hash 301b5b75e77076d091b38f555473f9f0e31e5b5c built by fridi@fzen)