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Seq.append<'T> Function (F#)

Wraps the two given enumerations as a single concatenated enumeration.

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

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

// Signature:
Seq.append : seq<'T> -> seq<'T> -> seq<'T>

// Usage:
Seq.append source1 source2

Parameters

  • source1
    Type: seq<'T>

    The first sequence.

  • source2
    Type: seq<'T>

    The second sequence.

Exceptions

Exception

Condition

ArgumentNullException

Thrown when either of the two provided sequences is null.

Return Value

The result sequence.

Remarks

The returned sequence may be passed between threads safely. However, individual IEnumerator values generated from the returned sequence should not be accessed concurrently.

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

Example

The following example hows how to use Seq.append.

printfn "%A" (Seq.append [| 1; 2; 3|] [ 4; 5; 6])

Output

seq [1; 2; 3; 4; ...]

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

Collections.Seq Module (F#)

Microsoft.FSharp.Collections Namespace (F#)