Method Basics

Method Basics

A Ruby method is defined with def method_name ... end, and called by its name, with or without parentheses depending on context. Method names conventionally use snake_case, and by convention, a method ending in ? returns a boolean while one ending in ! performs a mutating or "dangerous" operation. Every method returns a value, either explicitly via return or implicitly as the value of its last expression.

Note: Parentheses around method arguments are optional in Ruby, but idiomatic style generally includes them for methods that take arguments.

Example: Method Basics

def greet
  puts "Hello from a method!"
end

greet
greet()