ReadOnlySpan<T>.CastUp<TDerived> Method

Reference

Definition

Namespace:: System

Assembly:: System.Runtime.dll

Important

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Casts a read-only span of TDerived to a read-only span of T.

public:
generic <typename TDerived>
 where TDerived : class, T static ReadOnlySpan<T> CastUp(ReadOnlySpan<TDerived> items);

public static ReadOnlySpan<T> CastUp<TDerived> (ReadOnlySpan<TDerived> items) where TDerived : class, T;

static member CastUp : ReadOnlySpan<#'T> -> ReadOnlySpan<'T>

Public Shared Function CastUp(Of TDerived As {Class, T}) (items As ReadOnlySpan(Of TDerived)) As ReadOnlySpan(Of T)

Type Parameters

TDerived

The element type of the source read-only span, which must be derived from T.

Parameters

items: ReadOnlySpan<TDerived>

The source read-only span. No copy is made.

Returns

ReadOnlySpan<T>

A read-only span with elements cast to the new type.

Remarks

This method uses a covariant cast, producing a read-only span that shares the same memory as the source. The relationships expressed in the type constraints ensure that the cast is a safe operation.

Applies to

Jaa