FoldExtensionFoldT, TResult Method (IEnumerableT, FuncT, T, T, T, T, T, T, T, T, T, T, T, TResult)

Returns the result of applying a function to a sequence of 12 elements.

Namespace: MoreLinq.Extensions
Assembly: MoreLinq (in MoreLinq.dll) Version: 3.0.0

Syntax

C++

Copy

public static TResult Fold<T, TResult>(
	this IEnumerable<T> source,
	Func<T, T, T, T, T, T, T, T, T, T, T, T, TResult> folder
)

<ExtensionAttribute>
Public Shared Function Fold(Of T, TResult) ( 
	source As IEnumerable(Of T),
	folder As Func(Of T, T, T, T, T, T, T, T, T, T, T, T, TResult)
) As TResult

public:
[ExtensionAttribute]
generic<typename T, typename TResult>
static TResult Fold(
	IEnumerable<T>^ source, 
	Func<T, T, T, T, T, T, T, T, T, T, T, T, TResult>^ folder
)

[<ExtensionAttribute>]
static member Fold : 
        source : IEnumerable<'T> * 
        folder : Func<'T, 'T, 'T, 'T, 'T, 'T, 'T, 'T, 'T, 'T, 'T, 'T, 'TResult> -> 'TResult

Parameters

source: Type: System.Collections.GenericIEnumerableT
The sequence of items to fold.
folder: Type: SystemFuncT, T, T, T, T, T, T, T, T, T, T, T, TResult
Function to apply to the elements in the sequence.

Type Parameters

T: Type of element in the source sequence
TResult: Type of the result

Return Value

Type: TResult
The folded value returned by folder.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IEnumerableT. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

Exceptions

Exception	Condition
ArgumentNullException	source is null
ArgumentNullException	folder is null
InvalidOperationException	source does not contain exactly 12 elements

Remarks

This operator uses immediate execution and effectively buffers as many items of the source sequence as necessary.

Reference

FoldExtension Class

Fold Overload

MoreLinq.Extensions Namespace