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Showing content from https://dotnet.github.io/dotNext/api/DotNext.Span.html below:

Class Span | .NEXT

Class Span

Provides extension methods for type Span<T> and ReadOnlySpan<T>.

Namespace: DotNext Assembly: DotNext.dll Syntax Methods | Edit this page View Source Advance<T>(ref ReadOnlySpan<T>)

Takes the first element and adjusts the span.

Declaration
public static ref readonly T Advance<T>(this ref ReadOnlySpan<T> source)
Parameters Type Name Description ReadOnlySpan<T> source

The source span.

Returns Type Description T

The reference to the first element in the span.

Type Parameters Name Description T

The type of elements in the span.

Exceptions | Edit this page View Source Advance<T>(ref ReadOnlySpan<T>, int)

Takes the specified number of elements and adjusts the span.

Declaration
public static ReadOnlySpan<T> Advance<T>(this ref ReadOnlySpan<T> source, int count)
Parameters Type Name Description ReadOnlySpan<T> source

The source span.

int count

The number of elements to take.

Returns Type Description ReadOnlySpan<T>

The span containing count elements.

Type Parameters Name Description T

The type of elements in the span.

Exceptions | Edit this page View Source Advance<T>(ref Span<T>)

Takes the first element and adjusts the span.

Declaration
public static ref T Advance<T>(this ref Span<T> source)
Parameters Type Name Description Span<T> source

The source span.

Returns Type Description T

The reference to the first element in the span.

Type Parameters Name Description T

The type of elements in the span.

Exceptions | Edit this page View Source Advance<T>(ref Span<T>, int)

Takes the specified number of elements and adjusts the span.

Declaration
public static Span<T> Advance<T>(this ref Span<T> source, int count)
Parameters Type Name Description Span<T> source

The source span.

int count

The number of elements to take.

Returns Type Description Span<T>

The span containing count elements.

Type Parameters Name Description T

The type of elements in the span.

Exceptions | Edit this page View Source AsBytes<T>(T*)

Converts contiguous memory identified by the specified pointer into Span<T>.

Declaration
[CLSCompliant(false)]
public static Span<byte> AsBytes<T>(T* pointer) where T : unmanaged
Parameters Type Name Description T* pointer

The typed pointer.

Returns Type Description Span<byte>

The span of contiguous memory.

Type Parameters Name Description T

The type of the pointer.

| Edit this page View Source AsBytes<T>(ref T)

Converts contiguous memory identified by the specified pointer into Span<T>.

Declaration
public static Span<byte> AsBytes<T>(ref T value) where T : unmanaged
Parameters Type Name Description T value

The managed pointer.

Returns Type Description Span<byte>

The span of contiguous memory.

Type Parameters Name Description T

The type of the pointer.

| Edit this page View Source AsReadOnlyBytes<T>(ref readonly T)

Converts contiguous memory identified by the specified pointer into ReadOnlySpan<T>.

Declaration
public static ReadOnlySpan<byte> AsReadOnlyBytes<T>(ref readonly T value) where T : unmanaged
Parameters Type Name Description T value

The managed pointer.

Returns Type Parameters Name Description T

The type of the pointer.

| Edit this page View Source BitwiseCompare<T>(ReadOnlySpan<T>, ReadOnlySpan<T>)

Compares content of the two memory blocks identified by the given spans.

Declaration
public static int BitwiseCompare<T>(this ReadOnlySpan<T> x, ReadOnlySpan<T> y) where T : unmanaged
Parameters Type Name Description ReadOnlySpan<T> x

The first memory span to compare.

ReadOnlySpan<T> y

The second array to compare.

Returns Type Description int

Comparison result.

Type Parameters Name Description T

The type of elements in the span.

| Edit this page View Source BitwiseEquals<T>(ReadOnlySpan<T>, ReadOnlySpan<T>)

Determines whether two memory blocks identified by the given spans contain the same set of elements.

Declaration
public static bool BitwiseEquals<T>(this ReadOnlySpan<T> x, ReadOnlySpan<T> y) where T : unmanaged
Parameters Type Name Description ReadOnlySpan<T> x

The first memory span to compare.

ReadOnlySpan<T> y

The second memory span to compare.

Returns Type Description bool

true, if both memory blocks are equal; otherwise, false.

Type Parameters Name Description T

The type of elements in the span.

| Edit this page View Source CheckMask<T>(ReadOnlySpan<T>, ReadOnlySpan<T>)

Determines whether the specified value satisfies the given mask.

Declaration
public static bool CheckMask<T>(this ReadOnlySpan<T> value, ReadOnlySpan<T> mask) where T : unmanaged
Parameters Returns Type Description bool

true if value & mask == mask; otherwise, false.

Type Parameters Name Description T

The type of the values.

| Edit this page View Source Concat(ReadOnlySpan<string?>, MemoryAllocator<char>?)

Concatenates multiple strings.

Declaration
public static MemoryOwner<char> Concat(ReadOnlySpan<string?> values, MemoryAllocator<char>? allocator = null)
Parameters Returns Type Description MemoryOwner<char>

A buffer containing characters from the concatenated strings.

Exceptions | Edit this page View Source Concat<T>(ReadOnlySpan<T>, ReadOnlySpan<T>, MemoryAllocator<T>?)

Concatenates memory blocks.

Declaration
public static MemoryOwner<T> Concat<T>(this ReadOnlySpan<T> first, ReadOnlySpan<T> second, MemoryAllocator<T>? allocator = null)
Parameters Type Name Description ReadOnlySpan<T> first

The first memory block.

ReadOnlySpan<T> second

The second memory block.

MemoryAllocator<T> allocator

The memory allocator used to allocate buffer for the result.

Returns Type Description MemoryOwner<T>

The memory block containing elements from the specified two memory blocks.

Type Parameters Name Description T

The type of the elements in the memory.

| Edit this page View Source Concat<T>(ReadOnlySpan<T>, ReadOnlySpan<T>, ReadOnlySpan<T>, MemoryAllocator<T>?)

Concatenates memory blocks.

Declaration
public static MemoryOwner<T> Concat<T>(this ReadOnlySpan<T> first, ReadOnlySpan<T> second, ReadOnlySpan<T> third, MemoryAllocator<T>? allocator = null)
Parameters Returns Type Description MemoryOwner<T>

The memory block containing elements from the specified two memory blocks.

Type Parameters Name Description T

The type of the elements in the memory.

| Edit this page View Source Contravariance<T, TBase>(ReadOnlySpan<T>)

Upcasts the span.

Declaration
public static ReadOnlySpan<TBase> Contravariance<T, TBase>(this ReadOnlySpan<T> span) where T : class?, TBase where TBase : class?
Parameters Type Name Description ReadOnlySpan<T> span

The span over elements.

Returns Type Description ReadOnlySpan<TBase>

The span pointing to the same memory as span.

Type Parameters Name Description T

The source type.

TBase

The target type.

| Edit this page View Source CopyTo<T>(ReadOnlySpan<T>, Span<T>, out int)

Copies the contents from the source span into a destination span.

Declaration
public static void CopyTo<T>(this ReadOnlySpan<T> source, Span<T> destination, out int writtenCount)
Parameters Type Name Description ReadOnlySpan<T> source

Source memory.

Span<T> destination

Destination memory.

int writtenCount

The number of copied elements.

Type Parameters Name Description T

The type of the elements in the span.

| Edit this page View Source CopyTo<T>(Span<T>, Span<T>, out int)

Copies the contents from the source span into a destination span.

Declaration
public static void CopyTo<T>(this Span<T> source, Span<T> destination, out int writtenCount)
Parameters Type Name Description Span<T> source

Source memory.

Span<T> destination

Destination memory.

int writtenCount

The number of copied elements.

Type Parameters Name Description T

The type of the elements in the span.

| Edit this page View Source Copy<T>(ReadOnlySpan<T>, MemoryAllocator<T>?)

Creates buffered copy of the memory block.

Declaration
public static MemoryOwner<T> Copy<T>(this ReadOnlySpan<T> span, MemoryAllocator<T>? allocator = null)
Parameters Type Name Description ReadOnlySpan<T> span

The span of elements to be copied to the buffer.

MemoryAllocator<T> allocator

Optional buffer allocator.

Returns Type Description MemoryOwner<T>

The copy of the elements from span.

Type Parameters Name Description T

The type of the elements in the memory.

| Edit this page View Source FirstOrNone<T>(ReadOnlySpan<T>, Predicate<T>?)

Returns the first element in a span that satisfies a specified condition.

Declaration
public static Optional<T> FirstOrNone<T>(this ReadOnlySpan<T> span, Predicate<T>? filter = null)
Parameters Type Name Description ReadOnlySpan<T> span

The source span.

Predicate<T> filter

A function to test each element for a condition.

Returns Type Description Optional<T>

The first element in the span that matches to the specified filter; or None.

Type Parameters Name Description T

The type of the elements in the span.

| Edit this page View Source ForEach<T>(Span<T>, RefAction<T, int>)

Iterates over elements of the span.

Declaration
public static void ForEach<T>(this Span<T> span, RefAction<T, int> action)
Parameters Type Name Description Span<T> span

The span to iterate.

RefAction<T, int> action

The action to be applied for each element of the span.

Type Parameters Name Description T

The type of the elements.

| Edit this page View Source ForEach<T, TArg>(Span<T>, delegate*<ref T, TArg, void>, TArg)

Iterates over elements of the span.

Declaration
[CLSCompliant(false)]
public static void ForEach<T, TArg>(this Span<T> span, delegate*<ref T, TArg, void> action, TArg arg)
Parameters Type Name Description Span<T> span

The span to iterate.

delegate*<ref T, TArg, void> action

The action to be applied for each element of the span.

TArg arg

The argument to be passed to the action.

Type Parameters Name Description T

The type of the elements.

TArg

The type of the argument to be passed to the action.

Exceptions | Edit this page View Source IndexOf<T>(ReadOnlySpan<T>, T, int, delegate*<T, T, bool>)

Returns the zero-based index of the first occurrence of the specified value in the Span<T>. The search starts at a specified position.

Declaration
[CLSCompliant(false)]
public static int IndexOf<T>(this ReadOnlySpan<T> span, T value, int startIndex, delegate*<T, T, bool> comparer)
Parameters Type Name Description ReadOnlySpan<T> span

The span to search.

T value

The value to search for.

int startIndex

The search starting position.

delegate*<T, T, bool> comparer

The comparer used to compare the expected value and the actual value from the span.

Returns Type Description int

The zero-based index position of value from the start of the given span if that value is found, or -1 if it is not.

Type Parameters Name Description T

The of the elements in the span.

| Edit this page View Source IndexOf<T>(ReadOnlySpan<T>, T, int, Func<T, T, bool>)

Returns the zero-based index of the first occurrence of the specified value in the Span<T>. The search starts at a specified position.

Declaration
public static int IndexOf<T>(this ReadOnlySpan<T> span, T value, int startIndex, Func<T, T, bool> comparer)
Parameters Type Name Description ReadOnlySpan<T> span

The span to search.

T value

The value to search for.

int startIndex

The search starting position.

Func<T, T, bool> comparer

The comparer used to compare the expected value and the actual value from the span.

Returns Type Description int

The zero-based index position of value from the start of the given span if that value is found, or -1 if it is not.

Type Parameters Name Description T

The of the elements in the span.

| Edit this page View Source Initialize<T>(Span<T>)

Initializes each element in the span.

Declaration
public static void Initialize<T>(this Span<T> span) where T : new()
Parameters Type Name Description Span<T> span

The span of elements.

Type Parameters Name Description T

The type of the element.

| Edit this page View Source IsBitwiseAndNonZero<T>(ReadOnlySpan<T>, ReadOnlySpan<T>)

Determines whether the specified value and the given mask produces non-zero bitwise AND.

Declaration
public static bool IsBitwiseAndNonZero<T>(this ReadOnlySpan<T> value, ReadOnlySpan<T> mask) where T : unmanaged
Parameters Returns Type Description bool

true if value & mask != 0; otherwise, false.

Type Parameters Name Description T

The type of the values.

| Edit this page View Source Move<T>(Span<T>, Range, Index)

Moves the range within the span to the specified index.

Declaration
public static void Move<T>(this Span<T> span, Range range, Index destinationIndex)
Parameters Type Name Description Span<T> span

The span of elements to modify.

Range range

The range of elements within span to move.

Index destinationIndex

The index of the element before which range of elements will be placed.

Type Parameters Name Description T

The type of the elements in the span.

Exceptions | Edit this page View Source Sort<T>(Span<T>, delegate*<T?, T?, int>)

Sorts the elements.

Declaration
[CLSCompliant(false)]
public static void Sort<T>(this Span<T> span, delegate*<T?, T?, int> comparison)
Parameters Type Name Description Span<T> span

The contiguous region of arbitrary memory to sort.

delegate*<T, T, int> comparison

The comparer used for sorting.

Type Parameters Name Description T

The type of the elements.

| Edit this page View Source Swap<T>(Span<T>, Range, Range)

Swaps two ranges within the same span.

Declaration
public static void Swap<T>(this Span<T> span, Range range1, Range range2)
Parameters Type Name Description Span<T> span

The source span.

Range range1

The first range.

Range range2

The second range.

Type Parameters Name Description T

The type of the elements in the span.

Exceptions | Edit this page View Source Swap<T>(Span<T>, Span<T>)

Swaps contents of the two spans.

Declaration
public static void Swap<T>(this Span<T> x, Span<T> y)
Parameters Type Name Description Span<T> x

The first span.

Span<T> y

The second span.

Type Parameters Name Description T

The type of the elements in the span.

Exceptions | Edit this page View Source TrimLength<T>(ReadOnlySpan<T>, int)

Trims the span to specified length if it exceeds it. If length is less that maxLength then the original span returned.

Declaration
public static ReadOnlySpan<T> TrimLength<T>(this ReadOnlySpan<T> span, int maxLength)
Parameters Type Name Description ReadOnlySpan<T> span

A contiguous region of arbitrary memory.

int maxLength

Maximum length.

Returns Type Parameters Name Description T

The type of items in the span.

Exceptions | Edit this page View Source TrimLength<T>(Span<T>, int)

Trims the span to specified length if it exceeds it. If length is less that maxLength then the original span returned.

Declaration
public static Span<T> TrimLength<T>(this Span<T> span, int maxLength)
Parameters Type Name Description Span<T> span

A contiguous region of arbitrary memory.

int maxLength

Maximum length.

Returns Type Description Span<T>

Trimmed span.

Type Parameters Name Description T

The type of items in the span.

Exceptions | Edit this page View Source TrimLength<T>(Span<T>, int, out Span<T>)

Trims the span to specified length if it exceeds it. If length is less that maxLength then the original span returned.

Declaration
public static Span<T> TrimLength<T>(this Span<T> span, int maxLength, out Span<T> rest)
Parameters Type Name Description Span<T> span

A contiguous region of arbitrary memory.

int maxLength

Maximum length.

Span<T> rest

The rest of span.

Returns Type Description Span<T>

Trimmed span.

Type Parameters Name Description T

The type of items in the span.

Exceptions

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