indexOf (original) (raw)

Returns first index of element, or -1 if the array does not contain element.

Since Kotlin

1.0

Returns first index of element, or -1 if the collection does not contain element.

Since Kotlin

1.0

Returns first index of element, or -1 if the list does not contain element.

Since Kotlin

1.0

Returns first index of element, or -1 if the array does not contain element.

Since Kotlin

1.3

Deprecated

The function has unclear behavior when searching for NaN or zero values and will be removed soon. Use 'indexOfFirst { it == element }' instead to continue using this behavior, or '.asList().indexOf(element: T)' to get the same search behavior as in a list.

Replace with

indexOfFirst { it == element }

Returns first index of element, or -1 if the array does not contain element.

Since Kotlin

1.0