Operators.defaultArg<'T> Function (F#)

  • Article

Used to specify a default value for an optional argument in the implementation of a function.

Namespace/Module Path: Microsoft.FSharp.Core.Operators

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

// Signature:
defaultArg : 'T option -> 'T -> 'T

// Usage:
defaultArg arg defaultValue

Parameters

  • arg
    Type: 'T option

    An option representing the argument.

  • defaultValue
    Type: 'T

    The default value of the argument.

Return Value

The argument value. If it is None, the defaultValue is returned.

Remarks

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

Platforms

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

Reference

Core.Operators Module (F#)

Microsoft.FSharp.Core Namespace (F#)