Method: Module#attr_tester

Defined in:
lib/core/facets/module/attr_tester.rb

#attr_tester(*args) ⇒ Object

TODO:

This method will probably be deprecated.

Create an tester attribute. This creates a single method used to test the attribute for truth.

attr_tester :a

is equivalent to

def a?
  @a ? true : @a
end

Note that this method is not a common core extension and is not loaded automatically when using require 'facets'.

CREDIT: Trans

Uncommon:

  • require ‘facets/module/attr_tester’



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# File 'lib/core/facets/module/attr_tester.rb', line 24

def attr_tester(*args)
  code, made = '', []
  args.each do |a|
    code << %{
      def #{a}?(truth=nil)
        @#{a} ? truth || @#{a} : @#{a}
      end
    }
    made << "#{a}?".to_sym
  end
  module_eval code
  made
end