“Ruby Block_given? méthode” Réponses codées

Ruby Block_given? méthode

# used when we call method with and without block from different places
def try
  if block_given?
    yield
  else
    "no block"
  end
end
try                  #=> "no block"
try { "hello" }      #=> "hello"
try do "hello" end   #=> "hello"