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{TOC}

Back to Standard Query Operator Index


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Introduction

The Any operator checks whether any element of a sequence satisfies a condition.

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Method Signatures

// 1 - If any elements exist in the sequence
public static bool Any<TSource>(
    this IEnumerable<TSource> source)
 
// 2 - If any elements in the sequence satisfy a predicate function.
public static bool Any<TSource>(
    this IEnumerable<TSource> source, 
    Func<TSource, bool> predicate)

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Exceptions

Throws an ArgumentNullException is source or predicate is null.

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Pseudo-code

Overload 1
If source is null, throw an ArgumentNullException.
If there is at least one element in the source sequence, return true; Otherwise return false.


Overload 2
If source is null, throw an ArgumentNullException.
If predicate is null, throw an ArgumentNullException.
Iterate the source sequence
Return false only if all elements failed the predicate function (i.e. we fell through the loop).


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Loop Count

Overload 1: < 1. Always only looks at only one element.
Overload 2: < 1 if the predicate passes on any element, otherwise 1.


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Code Samples

TODO:Needs code sample.