FindFirstWhere Generic Method

Wintellect PowerCollections

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[This topic is pre-release documentation and is subject to change in future releases. Blank topics are included as placeholders.]

Finds the first item in a collection that satisfies the condition defined by predicate.

Namespace: Wintellect.PowerCollections
Assembly:  PowerCollections (in PowerCollections.dll)

Syntax

C#
public static T FindFirstWhere<T>(
	IEnumerable<T> collection,
	Predicate<T> predicate
)
Visual Basic (Declaration)
Public Shared Function FindFirstWhere(Of T) ( _
	collection As IEnumerable(Of T), _
	predicate As Predicate(Of T) _
) As T
Visual C++
public:
generic<typename T>
static T FindFirstWhere (
	IEnumerable<T>^ collection, 
	Predicate<T>^ predicate
)

Parameters

collection
IEnumerable<(Of <T>)>
The collection to search.
predicate
Predicate<(Of <T>)>
A delegate that defined the condition to check for.

Return Value

The first item in the collection that matches the condition, or the default value for T (0 or null) if no item that matches the condition is found.

Type Parameters

T

Remarks

If the default value for T could be present in the collection, and would be matched by the predicate, then this method is inappropriate, because you cannot disguish whether the default value for T was actually present in the collection, or no items matched the predicate. In this case, use TryFindFirstWhere.

See Also

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