.NET introduces Span<T>, basically D slices

[flamencofantasy]

On Sunday, 19 November 2017 at 14:46:32 UTC, Rumbu wrote:
> On Sunday, 19 November 2017 at 02:16:36 UTC, Luís Marques wrote:
>> https://github.com/dotnet/corefxlab/blob/master/docs/specs/span.md
>>
>> Seems like D wisdom is creeping in. For instance, the Data 
>> Pipelines section basically explains why ranges/slices and 
>> algorithms are nice and relevant: 
>> <https://github.com/dotnet/corefxlab/blob/master/docs/specs/span.md#data-pipelines>
>
> Sorry to disappoint, but Span<T> is something else. The .net 
> equivalent of D slices is in fact the not so popular 
> ArraySegment<T> available in .net since 2008.
>
> Span<T> will allow access to unmanaged and stack memory in the 
> same way as using a standard array.

Actually Span<T> is a lot more like D slices in that it can use 
any type of memory.
ArraySegment<T> can only be initialized with an array type and 
thus is very far from being like a D slice.
I use D slices exclusively with non-GC memory or mapped files and 
similarly I can now make use of Span<T> but I was never able to 
employ ArraySegment<T>.