Wait, It's All Methods?

One thing I always see come up in discussions of Ruby and its syntax is the omission of parentheses. To provide an example:

some_object.ambiguous_middle.do_thing(:arg1, :arg2)

The common complaint being that the user is unable to determine from this notation if ambiguous_middle is a property or method of some_object.

This distinction does not exist in Ruby. Everything is a method call, there are no naked properties.

Even data structure objects such as Array and Hash are the same way. my_hash[:key] is actually a method call.

class MyClass
  def [](key)

my_class = MyClass.new()
my_class["this is a string"]

Hopefully it is easier now to see things like ambiguous_middle for what they are: method calls with no arguments.