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Map.exists<'Key,'T> Function (F#)

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Returns true if the given predicate returns true for one of the bindings in the map.

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

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

// Signature:
Map.exists : ('Key -> 'T -> bool) -> Map<'Key,'T> -> bool (requires comparison)

// Usage:
Map.exists predicate table

Parameters

  • predicate
    Type: 'Key -> 'T -> bool

    The function to test the input elements.

  • table
    Type: Map<'Key,'T>

    The input map.

Return Value

true if the predicate returns true for one of the key/value pairs.

Remarks

This function is named Exists 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.Map Module (F#)

Microsoft.FSharp.Collections Namespace (F#)