コード例 #1
0
        /// <summary>
        /// Copies the contents of this span into another.  The destination
        /// must be at least as big as the source, and may be bigger.
        /// </summary>
        /// <param name="destination">The span to copy items into.</param>
        public bool TryCopyTo(Span <T> destination)
        {
            // There are some benefits of making local copies. See https://github.com/dotnet/coreclr/issues/5556
            var dest = destination;
            var src  = this;

            if (src.Length > dest.Length)
            {
                return(false);
            }

            if (default(T) != null && MemoryUtils.IsPrimitiveValueType <T>())
            {
                PtrUtils.CopyBlock(src.Object, src.Offset, dest.Object, dest.Offset,
                                   src.Length * PtrUtils.SizeOf <T>());
            }
            else
            {
                for (int i = 0; i < src.Length; i++)
                {
                    // We don't check bounds here as we are surely within them
                    T value = PtrUtils.Get <T>(src.Object, src.Offset, (UIntPtr)i);
                    PtrUtils.Set(dest.Object, dest.Offset, (UIntPtr)i, value);
                }
            }

            return(true);
        }