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Seq.scan<'T,'State> Function (F#)

Like Seq.fold, but computes on-demand and returns the sequence of intermediate and final results.

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

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

// Signature:
Seq.scan : ('State -> 'T -> 'State) -> 'State -> seq<'T> -> seq<'State>

// Usage:
Seq.scan folder state source

Type: 'State -> 'T -> 'State

A function that updates the state with each element from the sequence.


Type: 'State

The initial state.


Type: seq<'T>

The input sequence.




Thrown when the input sequence is null.

The result sequence.

This function is named Scan 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

F# Core Library Versions

Supported in: 2.0, 4.0, Portable

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