method_exists

  • Calling a method in Ruby is often referred to as “sending a message” to an object. Ruby methods reflect this idea and terminology. We check if a method exist by checking if an object “responds to” a certain message using Object#respond_to?.

    PHP

    class Car {
  public function drive() {}
}
$car = new Car;
$exists = method_exists($car, 'drive');
var_export($exists);
// => true

    Ruby

    class Car
  def drive; end
end
 
car = Car.new
p respond_to?(:drive)
# => true

    see also

← metaphone mkdir →

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