Ruby-03

 ~ Similarities with C ~

As with C, in Ruby,…

 * You may program procedurally if you like (but it will still be object-oriented behind the scenes).

 * Most of the operators are the same (including the compound assignment and also bitwise operators).

 * Though, Ruby doesn’t have ++ or --.
   You’ve got __FILE__ and __LINE__.

 * You can also have constants, though there’s no special const keyword.
   Const-ness is enforced by a naming convention instead— names starting with a capital letter
   are for constants.

 * Strings go in double-quotes. Strings are mutable.

 * Just like man pages, you can read most docs in your terminal window—though using the ri command.

 * You’ve got the same sort of command-line debugger available.


~ Similarities with C++ ~

As with C++, in Ruby,…

  *  You’ve got mostly the same operators (even ::).
     << is often used for appending elements to a list. One note though:
     with Ruby you never use -> it’s always just ..
  *  public, private, and protected do similar jobs.
  *  Inheritance syntax is still only one character, but it’s < instead of :.
  *  You may put your code into “modules”, similar to how namespace in C++ is used.
  *  Exceptions work in a similar manner, though the keyword names have been changed
     to protect the innocent.