[kwertzzz]

Nice article! One can you also use reduce(hcat,n) instead of hcat(n...). The function reduce(hcat,n) should be faster as there is optimized implementation of it:

https://github.com/JuliaLang/julia/blob/89a51fb98485219680c7...

This feature was discussed here: https://github.com/JuliaLang/julia/issues/21672