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Seq.map2<'T1,'T2,'U> Function (F#)

Den Delimarsky|Last Updated: 8/18/2017
1 Contributor

Creates a new collection whose elements are the results of applying the given function to the corresponding pairs of elements from the two sequences. If one input sequence is shorter than the other then the remaining elements of the longer sequence are ignored.

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

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


// Signature:
Seq.map2 : ('T1 -> 'T2 -> 'U) -> seq<'T1> -> seq<'T2> -> seq<'U>

// Usage:
Seq.map2 mapping source1 source2


mapping Type: 'T1 -> 'T2 -> 'U

A function to transform pairs of items from the input sequences.

source1 Type: seq<'T1>

The first input sequence.

source2 Type: seq<'T2>

The second input sequence.


ArgumentNullExceptionThrown when the input sequence is null.

Return Value

The result sequence.


This function is named Map2 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.Seq Module (F#)

Microsoft.FSharp.Collections Namespace (F#)

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