Ruby Integer and Fixnum unexpexted behavior

Question

I want to use gcd function of the Integer class. Using the example from Ruby Doc as a test it fails:

irb(main):001:0> 72.gcd 168
NoMethodError: undefined method `gcd' for 72:Fixnum
        from (irb):1

I have the windows one click installer ruby 1.8.6 (2008-08-11 patchlevel 287) [i386-mswin32]. On other PCs with the same version of ruby this works correctly.

Any ideas?

Perhaps some gem messed up your `Fixnum` class? Check whether you have some gem installed on the first machine, and not on the other. — Mladen Jablanović, Mar 18 '10 at 11:36
@Gerhard Teachable moment: And that's why one should always use gemsets or bundles. — Todd A. Jacobs, Sep 24 '14 at 21:11

score 2 · Accepted Answer · answered Mar 18 '10 at 11:44

2

Try

require 'rubygems'
72.gcd 168

answered Mar 18 '10 at 11:44

nas

3,676
19
19

score 2 · Answer 2 · answered May 08 '10 at 19:47

2

require 'rational'

answered May 08 '10 at 19:47

Brandon

21
1

Ruby Integer and Fixnum unexpexted behavior

2 Answers2