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comparison 1-Ruby/truthiness-irb.output @ 11:e0a92558400f

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Add some truthiness testing
author IBBoard <dev@ibboard.co.uk>
date Mon, 02 Jan 2017 21:13:00 +0000
parents
children 8d46064c9afc
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10:0374ae06729e 11:e0a92558400f
1 truthiness.rb(main):001:0> #! /usr/bin/env ruby
2 truthiness.rb(main):002:0*
3 truthiness.rb(main):003:0* values = [ true, false, 1, 0, -1, 'some string', '', nil ]
4 => [true, false, 1, 0, -1, "some string", "", nil]
5 truthiness.rb(main):004:0>
6 truthiness.rb(main):005:0* values.each { |val|
7 truthiness.rb(main):006:1* text = if val == nil then "nil" else "'#{val}'" end
8 truthiness.rb(main):007:1> puts "Val #{text} is truthy" if val
9 truthiness.rb(main):008:1> puts "Val #{text} is falsy" unless val
10 truthiness.rb(main):009:1> }
11 Val 'true' is truthy
12 Val 'false' is falsy
13 Val '1' is truthy
14 Val '0' is truthy
15 Val '-1' is truthy
16 Val 'some string' is truthy
17 Val '' is truthy
18 Val nil is falsy
19 => [true, false, 1, 0, -1, "some string", "", nil]
20 truthiness.rb(main):010:0>