In part 4 of this series we add some unit testing,
improve our tokenizer and implement the primitives ⍴ and ⍤.
In this blog post we will go over some significant changes, from implementing APL's array model to introducing dyadic operators!
Today is the day! Today is the day we take our APL programs and interpret them, so that something like ÷ 1 2 3 -⍨ 1.1 2.2 3.3 can output 10 5 3.33333333.
Let's build a simple APL interpreter! APL is an array-oriented programming language I picked up recently. The ease with which I can write code related to mathematics, its strange built-ins (which look like ⍴, ⍨, ⍒ or ⍣) and the fact that it is executed from right to left make it a fresh learning experience!
