Better Know A Ruby Thing 3: Positional Arguments – Noel Rappin Writes Here

Ruby has three ways to pass information from a method call to a method definition: positional arguments, keyword arguments, and block arguments. Each of these ways has:A syntax to declare an argument of that type in a method definitionA syntax to declare an argument of that type in a method callA class that can can be used to convert arbitrary objects into and out of method calls.