LearningRuby/14)TheRefactorFactory.rb at master · AlexeyShpavda/LearningRuby · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
=begin
  Contents:
    Omit Needless Words
    Less is More
=end

=begin
 Refactoring is the process by which we improve a code's structure,
 appearance, and/or performance without modifying its overall behavior.
=end

puts "### Omit Needless Words ###"
=begin
  require 'prime'

  def first_n_primes(n)

    unless n.is_a? Integer
      return "n must be an integer."
    end

    if n <= 0
      return "n must be greater than 0."
    end

    return Prime.first n
  end

first_n_primes(10)
=end

=begin
  require 'prime'

  def first_n_primes(n)

    return "n must be an integer." unless n.is_a? Integer

    return "n must be greater than 0." if n <= 0

    return Prime.first n
  end

  puts first_n_primes(10)
=end

puts "### Less is More ###"
=begin
  require 'prime'

  def first_n_primes(n)

    return "n must be an integer." unless n.is_a? Integer

    return "n must be greater than 0." if n <= 0

    return Prime.first n
  end

  puts first_n_primes(10)
=end
require 'prime'

def first_n_primes(n)
  return "n must be an integer." unless n.is_a? Integer
  return "n must be greater than 0." if n <= 0
  Prime.first n
end

puts first_n_primes(10)