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Seq.tryFind<'T> Function (F#)

  • Article

Attempts to find an element that satisfies a given predicate.

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

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

// Signature:
Seq.tryFind : ('T -> bool) -> seq<'T> -> 'T option

// Usage:
Seq.tryFind predicate source

Parameters

  • predicate
    Type: 'T -> bool

    A function that evaluates to a Boolean when given an item in the sequence.

  • source
    Type: seq<'T>

    The input sequence.

Exceptions

Exception

Condition

ArgumentNullException

Thrown when the input sequence is null.

Return Value

Returns the first element for which the given function returns true. Return None if no such element exists.

Remarks

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

Platforms

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

Version Information

F# Runtime

Supported in: 2.0, 4.0

Silverlight

Supported in: 3

See Also

Reference

Collections.Seq Module (F#)

Microsoft.FSharp.Collections Namespace (F#)