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{TOC}

Back to Standard Query Operator Index


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Introduction

The Reverse operator reverses the elements of a sequence.

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Method Signatures

public static IEnumerable<TSource> Reverse<TSource>(
    this IEnumerable<TSource> source)

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Exceptions

Throws an ArgumentNullException if source is null.


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Pseudo-code

If source is null, throw an ArgumentNullException.
Copy source into a local array TSource[] called buffer.
Iterate through the buffer in reverse order (by index position. i.e. count-1 to 0).

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Loop Count

1. A local array copy of the source sequence is generated, then each element is returned when iterated. This operator implements the standard deferred execution iterator pattern. This means, no looping will occur until the result is iterated over.

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Code Samples

TODO: Needs code sample.