The Scope of Constants : Constants « Language Basics « Ruby

The Scope of Constants

def circumference_of_circle(radius)
  2 * Pi * radius

Pi = 3.141592
puts circumference_of_circle(10)


Related examples in the same category

1.Constants in Ruby start with an uppercase letter
2.Ruby allows you to change the values in constants by assigning a new value to them:
3.Change the value of Pi, it'll let you do it, but you'll get a warning:
4.Constants are defined within the scope of the current class and are made available to all child classes, unless they're overridden:
5.Array constant
6.freeze does nothing since Fixnums are already immutable.