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Answer 1

+1 A:

just compared 1.8.6 to 1.9 and it looks like

(1..10).respond_to? :each_slice

is true in 1.9 and false in 1.8.6. So, the doc you are using is not for 1.8.6. if you can upgrade to a newer version of Ruby easily it should give you that method on the Range.

Pete 2010-02-19 02:48:50

Thanks, next time I'll check the docs version.

Pran 2010-02-19 02:51:11

Not true actually. The linked docs are for 1.8.6. The docs for 1.8.7 and 1.9 have core-1.8.7 and core-1.9 respectively instead of core in their url. It's just that the core docs also list methods that are added to core classes by files in stdlib (yes, that sucks).

sepp2k 2010-02-19 11:43:05

Answer 2

+5 A:

In ruby 1.8.6 you have to require 'enumerator' (which is part of stdlib and has been merged into core in 1.8.7+) before using each_slice.

Sadly the ruby-doc lists methods that are added to core classes by stdlib without mentioning where the methods are from.

sepp2k 2010-02-19 11:39:54

Thanks!FYI, I tried <require 'enumerable'> and it gave me an exception. On the other hand, <require 'enumerator'> worked and the method was available.

Pran 2010-02-19 19:36:52

You're right, it's enumerator. My mistake.

sepp2k 2010-02-19 19:46:22

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Why doesn't each_slice work?

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