Perl's @foo[3,7,1,-1] ?

MRAB python at mrabarnett.plus.com
Sun Jun 14 00:15:17 CEST 2009


Brian Quinlan wrote:
> kj wrote:
>> In <slrnh37t2p.63e.nick at irishsea.home.craig-wood.com> Nick Craig-Wood 
>> <nick at craig-wood.com> writes:
>>
>>> However I can't think of the last time I wanted to do this - array
>>> elements having individual purposes are usually a sign that you should
>>> be using a different data structure.
>>
>> In the case I was working with, was a stand-in for the value returned
>> by some_match.groups().  The match comes from a standard regexp
>> defined elsewhere and that captures more groups than I need.  (This
>> regexp is applied to every line of a log file.)
>>
>> kj
> 
> The common idiom for this sort of thing is:
> 
> _, _, _, val1, _, _, _, val2, ..., val3 = some_match.groups()
> 
Alternatively:

     val1, val2, val3 = some_match.group(4, 8, something)



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