[cycomachead]

In the File menu inside Snap!, click on libraries and on that list there's an entire APL library that expands upon these ideas. I am no APL expert; this is something really designed more about pushing the limits than something we're actively trying to teach, but there's definitely useful tools in there.

[bharvey]

I was lucky enough to meet Ken Iverson and Adin Falkoff at age 14 and have been an APL fan ever since, so the APL library has been a labor of love for me! It still needs a lot of work but it's getting the ideas out there.