Pretty-printing D arrays with Mir

[jmh530]

On Sunday, 31 May 2020 at 22:40:09 UTC, tastyminerals wrote:
> I often print arrays to see how they look and their contents.
> NumPy has a nice way of pretty-printing the arrays, and I was 
> lacking this in D.
> For the sake of practice, I wrote a small package. It uses 
> mir.ndslice but works for both standard D arrays and Mir Slices.
>
> import pretty_array;
> import mir.ndslice;
> import std.stdio;
>
> void main() {
>     auto b = [2, 2, 6].iota!int(1).fuse;
>     b.prettyArr.writeln;
> }
> ┌                   ┐
> │┌                 ┐│
> ││ 1  2  3  4  5  6││
> ││ 7  8  9 10 11 12││
> │└                 ┘│
> │┌                 ┐│
> ││13 14 15 16 17 18││
> ││19 20 21 22 23 24││
> │└                 ┘│
> └                   ┘
>
> https://github.com/tastyminerals/pretty_d_array
>
> There are of course a couple of things to finish like floating 
> precision and small number suppression.
> Still, hope somebody will find it handy.

Interesting.

I had done some work in 2018 for numir format facilities. At the 
time mir didn’t have a way to do @nogc formatting, but it does 
now. It might be interesting to either revisit that or think 
about getting this into mir.