SplitScript reference / String / indexOf

String.indexOf

Method

String.indexOf(substring: String) -> u32?

Finds the first exact substring and returns its UTF-8 byte offset.

Returns None when the substring is absent. An empty substring is found at byte offset zero. Searching is allocation-free and case-sensitive.

Parameters

• substring: The substring to search for.

Effects: pure

Runtime behavior: available everywhere; synchronous

Examples

Find a separator in an ASCII scene identifier

let separator = "chapter_room".indexOf("_") else return