Apl-Fundamentals

Hello World in APL

Every programming journey starts with Hello World. In APL, this is remarkably simple - in fact, it’s one of the easiest Hello World programs you’ll ever write.

The Code

Create a file named …

Variables and Types in APL

In most languages, variables hold a single value. In APL, every variable holds an array — and that changes everything. A scalar (single number) is just an array of rank 0. A string is a character …

Operators in APL

In most languages, operators apply to single values, and you write loops to apply them across collections. APL turns this idea inside out: every primitive operator applies to entire arrays without any …