List.map3<'T1,'T2,'T3,'U> Function (F#)
Creates a new collection whose elements are the results of applying the given function to the corresponding elements of the three collections simultaneously.
Namespace/Module Path: Microsoft.FSharp.Collections.List
Assembly: FSharp.Core (in FSharp.Core.dll)
// Signature:
List.map3 : ('T1 -> 'T2 -> 'T3 -> 'U) -> 'T1 list -> 'T2 list -> 'T3 list -> 'U list
// Usage:
List.map3 mapping list1 list2 list3
Parameters
mapping
Type: 'T1 -> 'T2 -> 'T3 -> 'UThe function to transform triples of elements from the input lists.
list1
Type: 'T1 listThe first input list.
list2
Type: 'T2 listThe second input list.
list3
Type: 'T3 listThe third input list.
Return Value
The list of transformed elements.
Remarks
This function is named Map3 in compiled assemblies. If you are accessing the function from a .NET language other than F#, or through reflection, use this name.
Example
The following code example illustrates the use of List.map3.
let list1 = [1; 2; 3]
let list2 = [4; 5; 6]
let newList = List.map3 (fun x y z -> x + y + z) list1 list2 [2; 3; 4]
printfn "%A" newList
Output
[7; 10; 13]
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