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MoreEnumerableZipLongestT1, T2, T3, TResult Method (IEnumerableT1, IEnumerableT2, IEnumerableT3, FuncT1, T2, T3, TResult)

Returns a projection of tuples, where each tuple contains the N-th element from each of the argument sequences.

Namespace:  MoreLinq
Assembly:  MoreLinq (in MoreLinq.dll) Version: 3.0.0
Syntax
public static IEnumerable<TResult> ZipLongest<T1, T2, T3, TResult>(
	this IEnumerable<T1> first,
	IEnumerable<T2> second,
	IEnumerable<T3> third,
	Func<T1, T2, T3, TResult> resultSelector
)

Parameters

first
Type: System.Collections.GenericIEnumerableT1
The first sequence.
second
Type: System.Collections.GenericIEnumerableT2
The second sequence.
third
Type: System.Collections.GenericIEnumerableT3
The third sequence.
resultSelector
Type: SystemFuncT1, 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

Type: IEnumerableTResult
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 IEnumerableT1. 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

If the input sequences are of different lengths then the result sequence will always be as long as the longest of input sequences. The default value of the each shorter sequence element type is used for padding. This operator uses deferred execution and streams its results.

This operator uses deferred execution and streams its results.

Examples
var numbers = new[] { 1, 2, 3 };
var letters = new[] { "A", "B", "C", "D" };
var chars   = new[] { 'a', 'b', 'c', 'd', 'e' };
var zipped  = numbers.ZipLongest(letters, chars, (n, l, c) => n + l + c);
The zipped variable, when iterated over, will yield "1Aa", "2Bb", "3Cc", "0Dd", "0e" in turn.
See Also