Hooked on LINQ

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Namespace:System.Linq
Assembly:System.Core.dll
Extends:IEnumerable<T>

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
If predicate( this element ) is true, return true immediately.
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.

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