Interactive Ruby Shell: Difference between revisions

Revision as of 20:04, 29 January 2006

Revision as of 01:39, 29 April 2006

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Program usage:

irb [ options ] [ ''programfile'' ] [ ''argument...'' ]

Example usage:

irb(main):001:0> n = 5

=> 5

irb(main):002:0> def fact(n)

irb(main):003:1> if n <= 1

irb(main):004:2> 1

irb(main):005:2> else

irb(main):006:2* n * fact(n - 1)

irb(main):007:2> end

irb(main):008:1> end

=> nil

irb(main):009:0> fact(n)

=> 120

==External links==