ReadOnlySpanPolyfillExtensionStartsWith(ReadOnlySpanChar, String) Method

Indicates whether a read-only span of characters starts with the specified String.

Definition

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

C#

public static bool StartsWith(
	this ReadOnlySpan<char> span,
	string? value
)

VB

<ExtensionAttribute>
Public Shared Function StartsWith ( 
	span As ReadOnlySpan(Of Char),
	value As String
) As Boolean

C++

public:
[ExtensionAttribute]
static bool StartsWith(
	ReadOnlySpan<wchar_t> span, 
	String^ value
)

F#

[<ExtensionAttribute>]
static member StartsWith : 
        span : ReadOnlySpan<char> * 
        value : string -> bool

Parameters

span ReadOnlySpanChar: The source span.
value String: The String to compare with the beginning of the source span.

Return Value

Boolean
true if value matches the beginning of span, otherwise false.

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

The method performs an ordinal character comparison. If value is null or Empty the method returns true.