Demos
Simple Programs
nginx
PHP CLI
nginx + PHP-FPM
MariaDB
Redis
WordPress (LEMP-but-SQLite)
WordPress (LEMP)
Shell
Python
Perl
Ruby
Erlang
Ruby on wasm-posix-kernel
Ruby 3.3.6 running inside a POSIX kernel compiled to WebAssembly
REPL
Script
Start Ruby REPL
Stop
-- Insert Snippet --
puts "Hello, World!"
puts RUBY_VERSION
[1,2,3,4,5].map { |x| x ** 2 }
{a: 1, b: 2}.each { |k,v| puts "#{k}=#{v}" }
3.times { |i| puts "iteration #{i}" }
-- Load Example --
Hello World
Blocks & Iterators
Hashes & Data
File I/O
Enumerable
Classes & OOP
Run
Ctrl+Enter to run
Ruby Code
numbers = (1..20).to_a squares = numbers.map { |n| n ** 2 } evens = squares.select(&:even?) puts "Squares of 1..20:" puts squares.join(", ") puts puts "Even squares:" puts evens.join(", ")
Output