The Ruby Way: Solutions and Techniques in Ruby Programming, Second Edition

5.11. Working with Complex Numbers

The standard library complex enables us to handle imaginary and complex numbers in Ruby. Much of it is self-explanatory.

Complex values can be created with this slightly unusual notation:

z = Complex(3,5)     # 3+5i

What is unusual about this is that we have a method name that is the same as the class name. In this case, the presence of the parentheses indicates a method call rather than a reference to a constant. In general, method names do not look like constants, and I don’t recommend the practice of capitalizing method names except in special cases like this. (Note that there are also methods called Integer and Float; in general, the capitalized method names are for data conversion or something similar.)

The ...