Without a return value

Functions

With a return value
Without a return value
Multiple return values
Without parameters
Array of parameters
Out parameters
In-out parameters
Modifying parameters
Optional parameter values
External parameter names
Recursion

def add_3_and_print(value)
puts value + 3
end

add_3_and_print(5)
# prints 8

Languages

Python C C++ Java C# JavaScript R Rust Golang Delphi PHP Swift Kotlin Lua TypeScript Clojure Bash Objective-C