Project: Ruby-style-guide

Publisher: Womply

Write ruby -w safe code.
Avoid hashes as optional parameters. Does the method do too much? (Object initializers are exceptions for this rule).
Avoid methods longer than 10 LOC (lines of code). Ideally, most methods will be shorter than
5 LOC. Empty lines do not contribute to the relevant LOC.
Avoid parameter lists longer than three or four parameters.
If you really need "global" methods, add them to Kernel
and make them private.

Use module instance variables instead of global variables.

# bad
$foo_bar = 1

# good
module Foo
  class << self
    attr_accessor :bar
  end
end

Foo.bar = 1

Avoid alias when alias_method will do.
Use OptionParser for parsing complex command line options and
ruby -s for trivial command line options.
Prefer Time.now over Time.new when retrieving the current system time.
Code in a functional way, avoiding mutation when that makes sense.
Do not mutate arguments unless that is the purpose of the method.
Avoid more than three levels of block nesting.
Be consistent. In an ideal world, be consistent with these guidelines.
Use common sense.

Last published over 6 years ago by David Kariuki.