{
"id": "fn-string-index_of",
"dataComponent": "string",
"heading": {
"title": "index_of",
"badges": ["String", "PARTIAL"]
},
"synopsis": "Returns the character index of the first occurrence of a substring, or -1 if not found. Partial/placeholder usage supported.",
"codeBlocks": [
"extend(\"string\")\n\nsput( string:index_of(\"ll\", \"Hello, lol!\") )\n# => 2\n\n# Not found:\nsput( string:index_of(\"x\", \"abc\") )\n# => -1"
],
"notes": [
"Arguments: substring, string.",
"Index is counted in Unicode characters.",
"Partial and _ supported."
]
}