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Code Comments

Ruby has two types of comments: inline and block.

Inline comments start with the # character and continue until the end of the line:

# On a separate line
class Foo # or at the end of the line
  # can be indented
  def bar
  end
end

Block comments start with =begin and end with =end. Each should start on a separate line.

=begin
This is
commented out
=end

class Foo
end

=begin some_tag
this works, too
=end

=begin and =end can not be indented, so this is a syntax error:

class Foo
  =begin
  Will not work
  =end
end