Method: Lisp#assoc

Defined in:
lib/mega/lisp.rb

#assoc(x, list) ⇒ Object 



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# File 'lib/mega/lisp.rb', line 254

def assoc(x, list)
  f = filter(lambda { |y| x == car(y)}, list)
  if null?(f) then nil else car(f) end
end