Ruby/Rails Features and Patterns

Flashcard 2 of 6

Let's turn our attention to some newer Ruby syntax.

Are you familiar with the syntax shown in this parameter list?

def initialize(file, permissions:)
end

The syntax shown is for required keyword arguments.

Here's an example:

def foo(bar:)
  puts bar
end

foo # => ArgumentError: missing keyword: bar
foo(bar: 'baz') # => 'baz'