Table of contents
TOC
Collapse the table of content
Expand the table of content

Array.init<'T> Function (F#)

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

Creates an array given the dimension and a generator function to compute the elements.

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

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

Syntax

// Signature:
Array.init : int -> (int -> 'T) -> 'T []

// Usage:
Array.init count initializer

Parameters

count Type: int

The number of elements to initialize.

initializer Type: int-> 'T

The function to generate the initial values for each index.

Return Value

The created array.

Remarks

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

Example

The following code demonstrates the use of Array.init.


printfn "Array of squares: %A" (Array.init 10 (fun index -> index * index))
Array of squares: [|0; 1; 4; 9; 16; 25; 36; 49; 64; 81|]

Platforms

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

Version Information

F# Core Library Versions

Supported in: 2.0, 4.0

See Also

Collections.Array Module (F#)

Microsoft.FSharp.Collections Namespace (F#)

© 2017 Microsoft