APL

APL (Array Programming Language) is a concise, multidimensional array-oriented programming language. It relies on a specialized set of mathematical symbols to express complex array transformations and calculations without explicit control loops. GNU APL is a free implementation of the ISO standard 13751.

Installation

Install GNU APL on Ubuntu using apt:

apt update
apt install -y gnu-apl

Verification

Verify that GNU APL is properly installed:

apl --version

Writing and Running Code

Create an APL script file named hello.apl:

⎕ ← 'Hello, World!'
)OFF

Execute the script using GNU APL:

apl -f hello.apl

You can also start the interactive REPL:

apl

Type )OFF to exit the REPL.

Official Resources

• Official Website