Module: Enumerable

Defined in:
lib/first_and_only.rb

Defined Under Namespace

Modules: FirstAndOnly

Instance Method Summary collapse

Instance Method Details

#first_and_only! ⇒ Object 



4
5
6
7
 
# File 'lib/first_and_only.rb', line 4

def first_and_only!
  fail(FirstAndOnly::CountNotOne.new count) if first(2).count != 1
  first
end