Method: Module#abstract

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

#abstract(*sym) ⇒ Object

Create an abstract method. If it is not overridden, it will raise a TypeError when called.

class AbstractExample
  abstract :a
end

c = AbstractExample.new

expect TypeError do
  c.a
end

CREDIT: Trans



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# File 'lib/core/facets/module/abstract.rb', line 18

def abstract(*sym)
  sym.each do |s|
    define_method(s){ raise TypeError, "undefined abstraction ##{s}" }
  end
end