Kbd VS array

Should you wish to type them on a normal keyboard:

https://abrudz.github.io/lb/apl has a browser bookmarklet which adds an APL language bar to the top of any web page so you can type in any input box with backtick prefixes.

https://github.com/abrudz/Kbd has a Windows Input Method Editor (IME) that adds system-wide RightAlt+letter combos.

:d) https://github.com/abrudz/Kbd

I use setxkbmap -layout us,apl -variant ,dyalog -option grp:switch on Linux and https://github.com/abrudz/Kbd on Windows.

This might have been true a couple of years ago but it is totally untrue now.

I'm not sure why you couldn't use the student version of Dyalog? Sounds like it would have been fine. There are also many more FOSS implementations of array languages now, such as ngn/k and April. https://github.com/phantomics/april

'only available for Linux' - not true https://github.com/abrudz/Kbd/ and others (also different input modes like `w for ⍵)

'no community support' - on the contrary there is a big and helpful APL community https://aplwiki.com/wiki/Chat_rooms_and_forums that is (imo) more useful than stackoverflow

'Dynamic scoping...' - Dyalog's (and other APL's) dfns have lexical scope.

'The language is extremely terse' - is this meant to be a bad thing?

'The code tends to be very hacky' - maybe if you write bad code or try and write C in APL (it won't work)

In general programming I like to use a keyboard layout which allows typing APL glyphs with Right Alt: https://github.com/abrudz/Kbd

I should have mentioned somewhere, I disabled threading for OpenBLAS, so it is comparing one thread to one thread. Parallelism would be easy to add, but I tend to want the thread parallelism outside code like this anyways.

As for the inner loop not being well optimized... the disassembly looks like the same basic thing as OpenBLAS. There's disassembly in the comments of that file to show what code it generates, I'd love to know what you think is lacking! The only difference between the one I linked and this is prefetching and outer loop ordering: https://github.com/dsharlet/array/blob/master/examples/linea...

If you are looking for something like this in C++, here's my attempt at implementing it: https://github.com/dsharlet/array#einstein-reductions

It doesn't do any automatic optimization of the loops like some of the projects linked in this thread, but, it provides all the tools needed for humans to express the code in a way that a good compiler can turn it into really good code.