Lazy concatenation and padding utilities
Ilya Yaroshenko via Digitalmars-d
digitalmars-d at puremagic.com
Thu Mar 9 05:46:57 PST 2017
On Thursday, 9 March 2017 at 08:59:28 UTC, Ilya Yaroshenko wrote:
> Hello
>
> Ndslice got [1] lazy multidimensional concatenation and padding
> utilities:
> 1. stack
> 2. pad
> 2. padEdge
> 3. padSymmetric
> 4. padWrap
>
>
> `stack` can be used for ndslices instead of `chain`.
>
> ---
> import mir.ndslice.allocation: slice;
> import mir.ndslice.stack: stack;
>
> auto d = stack(a, b, c).slice;
> ---
>
> ndslice allocation and assign utilities are optimised to work
> with stacks. For example the code above is significantly faster
> then
>
> ---
> import std.array: array;
> import std.range: chain;
>
> auto d = chain(a, b, c).array;
> ---
>
> because `slice` uses external iteration for `Stack` data
> structure.
>
> [1] http://docs.algorithm.dlang.io/latest/mir_ndslice_stack.html
>
> Best regards,
> Ilya
`stack` was renamed to `concatenation` to much numpy and Matlab
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