System.MemoryExtensionsPolyfills
Provides downlevel polyfills for span extension methods.
namespace System
{
internal static class MemoryExtensionsPolyfills
{
public static bool Contains<T>(this ReadOnlySpan<T> span, T value) where T : IEquatable<T>;
public static bool ContainsAnyExcept(this ReadOnlySpan<char> span, char value);
public static bool ContainsAny(this ReadOnlySpan<char> span, ReadOnlySpan<char> values);
}
}