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Array.tryFindIndex<'T> Function (F#)

Returns the index of the first element in the array that satisfies the given predicate.

Namespace/Module Path: Microsoft.FSharp.Collections.Array

Assembly: FSharp.Core (in FSharp.Core.dll)

// Signature:
Array.tryFindIndex : ('T -> bool) -> 'T [] -> int option

// Usage:
Array.tryFindIndex predicate array


Type: 'T -> bool

The function to test the input elements.


Type: 'T []

The input array.

The index of the first element that satisfies the predicate, or None.

This function is named TryFindIndex in compiled assemblies. If you are accessing the function from a language other than F#, or through reflection, use this name.

Windows 7, Windows Vista SP2, Windows XP SP3, Windows XP x64 SP2, Windows Server 2008 R2, Windows Server 2008 SP2, Windows Server 2003 SP2

F# Runtime

Supported in: 2.0, 4.0


Supported in: 3

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