Overview

Introduction — Learning APL

• Comment operator ⍝
• Division ÷
• Multiplication ×
• Unary minus: ¯

Evaluation is strictly left to right, always.

• Assignment is done with ←
• Unit operator ⊢ returns val of expression
• IO operator ⎕

print with ⎕ ←

It’s arrays all the way down — Learning APL

• APL is an array programming language
• APL only deals in arrays; it is the only data structure
• arrays can be many things though, from math: matrices, vectors, from programming: string, list