ReadOnlySpanPolyfillExtensionLastIndexOfAny(ReadOnlySpanChar, String) Method

Searches for the zero-based index of the last occurrence of one of the specified Unicode characters.

Definition

Namespace: FolkerKinzel.Strings
Assembly: FolkerKinzel.Strings (in FolkerKinzel.Strings.dll) Version: 9.5.0+6287955de434d14f61638ea0c3c40b499ae05cd1

C#

public static int LastIndexOfAny(
	this ReadOnlySpan<char> span,
	string? values
)

VB

<ExtensionAttribute>
Public Shared Function LastIndexOfAny ( 
	span As ReadOnlySpan(Of Char),
	values As String
) As Integer

C++

public:
[ExtensionAttribute]
static int LastIndexOfAny(
	ReadOnlySpan<wchar_t> span, 
	String^ values
)

F#

[<ExtensionAttribute>]
static member LastIndexOfAny : 
        span : ReadOnlySpan<char> * 
        values : string -> int

Parameters

span ReadOnlySpanChar: The span to examine.
values String: A string containing the characters to search for, or null.

Return Value

Int32
The zero-based index of the last occurrence of one of the specified Unicode characters in span or -1 if none of these characters have been found. If values is null or empty, the method returns -1.

Usage Note

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

Remarks

MemoryExtensions.LastIndexOfAny<T>(ReadOnlySpan<T>, ReadOnlySpan<T>) is used for the comparison.