Friday, May 28, 2010
http://weblog.rubyonrails.org/2006/3/1/new-in-rails-enumerable-group_by-and-array-in_groups_of
enjoy!
This isn't quite the same thing though.
>> a = %w(1 2 3 4 5 6 7 8 9 10)
>> a.in_groups_of(3)
=> [["1", "2", "3"], ["4", "5", "6"], ["7", "8", "9"], ["10", nil, nil]]
It gives you 4 groups, not three as the OP's expecting.
I would use the Array#chunk method at http://blog.jayfields.com/2007/09/ruby-arraychunk.html like this:
>> a.chunk(3)
=> [["1", "4", "7", "10"], ["2", "5", "8"], ["3", "6", "9"]]
Cheers,
Andy
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