MemoryExtensions.StartsWith Method
Definition
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Overloads
| StartsWith(ReadOnlySpan<Char>, ReadOnlySpan<Char>, StringComparison) |
Determines whether a read-only character span begins with a specified value when compared using a specified StringComparison value. |
| StartsWith<T>(Span<T>, ReadOnlySpan<T>) |
Determines whether a specified sequence appears at the start of a span. |
| StartsWith<T>(ReadOnlySpan<T>, ReadOnlySpan<T>) |
Determines whether a specified sequence appears at the start of a read-only span. |
| StartsWith<T>(ReadOnlySpan<T>, T) |
Determines whether the specified value appears at the start of the span. |
StartsWith(ReadOnlySpan<Char>, ReadOnlySpan<Char>, StringComparison)
Determines whether a read-only character span begins with a specified value when compared using a specified StringComparison value.
public:
[System::Runtime::CompilerServices::Extension]
static bool StartsWith(ReadOnlySpan<char> span, ReadOnlySpan<char> value, StringComparison comparisonType);public static bool StartsWith (this ReadOnlySpan<char> span, ReadOnlySpan<char> value, StringComparison comparisonType);static member StartsWith : ReadOnlySpan<char> * ReadOnlySpan<char> * StringComparison -> bool<Extension()>
Public Function StartsWith (span As ReadOnlySpan(Of Char), value As ReadOnlySpan(Of Char), comparisonType As StringComparison) As BooleanParameters
- span
- ReadOnlySpan<Char>
The source span.
- value
- ReadOnlySpan<Char>
The sequence to compare to the beginning of the source span.
- comparisonType
- StringComparison
An enumeration value that determines how span and value are compared.
Returns
true if value matches the beginning of span; otherwise, false.
Applies to
StartsWith<T>(Span<T>, ReadOnlySpan<T>)
- Source:
- MemoryExtensions.cs
- Source:
- MemoryExtensions.cs
- Source:
- MemoryExtensions.cs
Determines whether a specified sequence appears at the start of a span.
public:
generic <typename T>
where T : IEquatable<T>[System::Runtime::CompilerServices::Extension]
static bool StartsWith(Span<T> span, ReadOnlySpan<T> value);public static bool StartsWith<T> (this Span<T> span, ReadOnlySpan<T> value) where T : IEquatable<T>;static member StartsWith : Span<'T (requires 'T :> IEquatable<'T>)> * ReadOnlySpan<'T (requires 'T :> IEquatable<'T>)> -> bool (requires 'T :> IEquatable<'T>)<Extension()>
Public Function StartsWith(Of T As IEquatable(Of T)) (span As Span(Of T), value As ReadOnlySpan(Of T)) As BooleanType Parameters
- T
The type of the elements in the span.
Parameters
- span
- Span<T>
The span to search.
- value
- ReadOnlySpan<T>
A sequence to search for at the start of span.
Returns
true if value matches the beginning of span; otherwise, false.
Applies to
StartsWith<T>(ReadOnlySpan<T>, ReadOnlySpan<T>)
- Source:
- MemoryExtensions.cs
- Source:
- MemoryExtensions.cs
- Source:
- MemoryExtensions.cs
Determines whether a specified sequence appears at the start of a read-only span.
public:
generic <typename T>
where T : IEquatable<T>[System::Runtime::CompilerServices::Extension]
static bool StartsWith(ReadOnlySpan<T> span, ReadOnlySpan<T> value);public static bool StartsWith<T> (this ReadOnlySpan<T> span, ReadOnlySpan<T> value) where T : IEquatable<T>;static member StartsWith : ReadOnlySpan<'T (requires 'T :> IEquatable<'T>)> * ReadOnlySpan<'T (requires 'T :> IEquatable<'T>)> -> bool (requires 'T :> IEquatable<'T>)<Extension()>
Public Function StartsWith(Of T As IEquatable(Of T)) (span As ReadOnlySpan(Of T), value As ReadOnlySpan(Of T)) As BooleanType Parameters
- T
The type of elements in the span.
Parameters
- span
- ReadOnlySpan<T>
The read-only character span to search.
- value
- ReadOnlySpan<T>
A sequence to search for at the start of span.
Returns
true if value matches the beginning of span; otherwise, false.
Applies to
StartsWith<T>(ReadOnlySpan<T>, T)
Determines whether the specified value appears at the start of the span.
public:
generic <typename T>
where T : IEquatable<T>[System::Runtime::CompilerServices::Extension]
static bool StartsWith(ReadOnlySpan<T> span, T value);public static bool StartsWith<T> (this ReadOnlySpan<T> span, T value) where T : IEquatable<T>;static member StartsWith : ReadOnlySpan<'T (requires 'T :> IEquatable<'T>)> * 'T -> bool (requires 'T :> IEquatable<'T>)<Extension()>
Public Function StartsWith(Of T As IEquatable(Of T)) (span As ReadOnlySpan(Of T), value As T) As BooleanType Parameters
- T
The type of elements in the span.
Parameters
- span
- ReadOnlySpan<T>
The span to search.
- value
- T
The value to compare.
Returns
true if value matches the beginning of span; otherwise, false.
