IndexOf
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indexOf returns index or key of the given value, or null if not found.
Arguments
| Parameter Name | Default Value | Meaning |
|---|---|---|
| self | string, list, or map | object to search |
| value | any | value to search for |
| after | any, optional | if given, starts the search after this index |
Examples
"Hello World".indexOf("o") // returns 4
"Hello World".indexOf("o", 4) // returns 7
"Hello World".indexOf("o", 7) // returns null
