Tarcisio Gruppi 23dc85d94d Making string index methods follow the same standard ... All string index methods that end with `_opt` return `?int` with none as the value when the substring is not found and the index methods that do not end in `_opt` return `int` with -1 as the returned value when the substring is not found		2022-03-17 09:27:11 -03:00
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checker.v	Making string index methods follow the same standard	2022-03-17 09:27:11 -03:00