EquiZipExtension.EquiZip<T1, T2, T3, TResult>(IEnumerable<T1>, IEnumerable<T2>, IEnumerable<T3>, Func<T1, T2, T3, TResult>) Method

Returns a projection of tuples, where each tuple contains the N-th element from each of the argument sequences. An exception is thrown if the input sequences are of different lengths.

Definition

Namespace: MoreLinq.Extensions
Assembly: MoreLinq (in MoreLinq.dll) Version: 3.4.0+b99a6a8cc504caf2d48372fe54a2f8116c59cd0c

C#
public static IEnumerable<TResult> EquiZip<T1, T2, T3, TResult>(
	this IEnumerable<T1> first,
	IEnumerable<T2> second,
	IEnumerable<T3> third,
	Func<T1, T2, T3, TResult> resultSelector
)

VB
<ExtensionAttribute>
Public Shared Function EquiZip(Of T1, T2, T3, TResult) ( 
	first As IEnumerable(Of T1),
	second As IEnumerable(Of T2),
	third As IEnumerable(Of T3),
	resultSelector As Func(Of T1, T2, T3, TResult)
) As IEnumerable(Of TResult)

C++
public:
[ExtensionAttribute]
generic<typename T1, typename T2, typename T3, typename TResult>
static IEnumerable<TResult>^ EquiZip(
	IEnumerable<T1>^ first, 
	IEnumerable<T2>^ second, 
	IEnumerable<T3>^ third, 
	Func<T1, T2, T3, TResult>^ resultSelector
)

F#
[<ExtensionAttribute>]
static member EquiZip : 
        first : IEnumerable<'T1> * 
        second : IEnumerable<'T2> * 
        third : IEnumerable<'T3> * 
        resultSelector : Func<'T1, 'T2, 'T3, 'TResult> -> IEnumerable<'TResult> 

Parameters

first IEnumerable<T1>: The first sequence.
second IEnumerable<T2>: The second sequence.
third IEnumerable<T3>: The third sequence.
resultSelector Func<T1, T2, T3, TResult>: Function to apply to each triplet of elements.

Type Parameters

T1: Type of elements in first sequence.
T2: Type of elements in second sequence.
T3: Type of elements in third sequence.
TResult: Type of elements in result sequence.

Return Value

IEnumerable<TResult>
A sequence that contains elements of the three input sequences, combined by resultSelector.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IEnumerable<T1>. 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

This operator uses deferred execution and streams its results.

Example

C#
var numbers = new[] { 1, 2, 3, 4 };
var letters = new[] { "A", "B", "C", "D" };
var chars   = new[] { 'a', 'b', 'c', 'd' };
var zipped  = numbers.EquiZip(letters, chars, (n, l, c) => n + l + c);

The zipped variable, when iterated over, will yield "1Aa", "2Bb", "3Cc", "4Dd" in turn.

Exceptions

InvalidOperationException	The input sequences are of different lengths.
ArgumentNullException	first, second, third, or resultSelector is null.