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MoreEnumerable.ScanRight<TSource> Method (IEnumerable<TSource>, Func<TSource, TSource, TSource>)

Peforms a right-associative scan (inclusive prefix) on a sequence of elements. This operator is the right-associative version of the Scan<TSource> (IEnumerable<TSource> , Func<TSource, TSource, TSource> ) LINQ operator.

Namespace:  MoreLinq
Assembly:  MoreLinq (in MoreLinq.dll) Version: 3.0.0
Syntax
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public static IEnumerable<TSource> ScanRight<TSource>(
	this IEnumerable<TSource> source,
	Func<TSource, TSource, TSource> func
)

Parameters

source
Type: System.Collections.Generic.IEnumerable<TSource>
Source sequence.
func
Type: System.Func<TSource, TSource, TSource>
A right-associative accumulator function to be invoked on each element. Its first argument is the current value in the sequence; second argument is the previous accumulator value.

Type Parameters

TSource
Type of elements in source sequence.

Return Value

Type: IEnumerable<TSource>
The scanned sequence.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IEnumerable<TSource>. 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. Source sequence is consumed greedily when an iteration of the resulting sequence begins.
Examples
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var result = Enumerable.Range(1, 5).Select(i => i.ToString()).ScanRight((a, b) => string.Format("({0}/{1})", a, b));
The result variable will contain [ "(1+(2+(3+(4+5))))", "(2+(3+(4+5)))", "(3+(4+5))", "(4+5)", "5" ].
See Also