Set.contains<'T> Function (F#)

Evaluates to true if the given element is in the given set.

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

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

// Signature:
Set.contains : 'T -> Set<'T> -> bool (requires comparison)

// Usage:
Set.contains element set


  • element
    Type: 'T

    The element to test.

  • set
    Type: Set<'T>

    The input set.

Return Value

True if element is in set.


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


Windows 8, Windows 7, Windows Server 2012, Windows Server 2008 R2

Version Information

F# Core Library Versions

Supported in: 2.0, 4.0, Portable

See Also


Collections.Set Module (F#)

Microsoft.FSharp.Collections Namespace (F#)