Sometimes I forget that I like Ruby

12 Mar 2007 • Technology

Had a fun experience today

    irb(main):001:0> 7.7
    => 7.7
    irb(main):002:0> 7.8
    => 7.8
    irb(main):003:0> 7.7-7.8
    => -0.0999999999999996

Yes I know it is a Float, but everything else just works so I was lulled into a false sense of security, after all the other two bits worked OK

    irb(main):006:0> 7.7 + 0.1
    => 7.8
    irb(main):007:0> 7.8 - 0.1
    => 7.7

But that 7.8 - 7.7 just did not want to play nice.

 2007