Sebastian Hungerecker wrote:
> Drew Olson wrote:
>> I have a question after studying my own solution for the ruby-wise :)
>> Why does this scan return an array of arrays rather than a simple array
>> of matches?
> 
> If you don't use groups within your regexp, scan will just return an 
> array
> with the matched strings. If you do however, it will return an array of
> arrays, each array containing one string per matched group.
> Example:
>>> "la=lu,lipp=lapp,slipp=slapp".scan(/\w+=\w+/)
> => ["la=lu", "lipp=lapp", "slipp=slapp"]
>>> "la=lu,lipp=lapp,slipp=slapp".scan(/(\w+)=(\w+)/)
> => [["la", "lu"], ["lipp", "lapp"], ["slipp", "slapp"]]
> 
> 
> HTH,
> Sebastian Hungerecker

Thanks, that makes perfect sense. Incidentally, I did only want the 
results of the grouping returned, however now I understand the rational 
behind the array of arrays. Very helpful as always.

-Drew

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