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ListExtensionsIndexOfFirstT(IEnumerableT, FuncT, Boolean) Method

Gets the index the of first item in list that fulfills the predicate predicate

Namespace: Altaxo.Collections
Assembly: AltaxoCore (in AltaxoCore.dll) Version: 4.8.3179.0 (4.8.3179.0)
Syntax
C#
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public static int IndexOfFirst<T>(
	this IEnumerable<T> list,
	Func<T, bool> predicate
)

Parameters

list  IEnumerableT
The list.
predicate  FuncT, Boolean
The predicate function. The first argument is the item. If the return value is true, the index of this item is returned.

Type Parameters

T
Type of items in the list

Return Value

Int32
Index the of first item in list that fulfills the predicate, or a value of -1 if no such item could be found.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IEnumerableT. 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).
See Also