attachAttachT1, T2 Method (IListT1, FuncT1, T2)

Turns each element in an IListT to a tuple including itself and an output of itself and a selector function.

Namespace: WhetStone.Looping
Assembly: WhetStone (in WhetStone.dll) Version: 1.0.4.0 (1.0.0.0)

Syntax

public static IList<Tuple<T1, T2>> Attach<T1, T2>(
	this IList<T1> this,
	Func<T1, T2> selector
)

Parameters

this: Type: System.Collections.GenericIListT1
The original IListT
selector: Type: SystemFuncT1, T2
The function from which to get the output as the second member of the tuple.

Type Parameters

T1: The type of the original IListT
T2: The type of selector's output.

Return Value

Type: IListTupleT1, T2
An IListT of type TupleT1, T2 of this's elements with the output of the selector function applied to them.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IListT1. 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).

Remarks

enumerable.Attach(selector) is functionally identical to enumerable.Zip(enumerable.Select(selector)). Although here, the enumerable is enumerated only once per output enumeration, the ItemInt32 is invoked once per access.

Reference

attach Class

Attach Overload

WhetStone.Looping Namespace