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IlyaUmanetsvs.10XL

Check if a method exists using `respond_to?`

Code
Diff
  • class Person
  attr_accessor :name

  def initialize(name)
    self.name = name
  end
end

def change_name(new_name, thing)
  thing.name = new_name if thing.respond_to?(:name=)
end
    • class Person
    • attr_accessor :name
    • def initialize(name)
    • @name = name
    • self.name = name
    • end
    • end
    • def change_name(new_name, thing)
    • if thing.respond_to?(:name=)
    • # do something
    • thing.name = new_name
    • else
    • nil
    • end
    • thing.name = new_name if thing.respond_to?(:name=)
    • end