array problem - splitting array

perlbeginner10 has asked for the wisdom of the Perl Monks concerning the following question:

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Re: array problem - splitting array by Happy-the-monk (Canon) on Nov 25, 2005 at 10:16 UTC
Allow it so split on more than one blank with the `+` quantifier as explained in `perldoc perlre`: `@sen = split(/ +/, $sent);` Cheers, Sören	[reply]
Re: array problem - splitting array by wfsp (Abbot) on Nov 25, 2005 at 10:29 UTC
or... `@sen = split ' ', $str;` [download] See split As a special case, specifying a PATTERN of space (' ') will split on white space... hth	[reply] [d/l]
Re: array problem - splitting array by secret (Beadle) on Nov 25, 2005 at 10:29 UTC
When splitting on space you can use : `split " ", $sent` [download] The " " expression does some extra magic which is usualy what you want :)	[reply] [d/l]
Re: array problem - splitting array by GrandFather (Saint) on Nov 25, 2005 at 10:14 UTC
`use strict; use warnings; my @sen = ('I', 'want', '', 'chocolate', 'and', '', 'icecream'); print join '/', @sen; @sen = grep {length} @sen; print "\n" . join '/', @sen;` [download] Prints: `I/want//chocolate/and//icecream I/want/chocolate/and/icecream` [download] DWIM is Perl's answer to Gödel	[reply] [d/l] [select]
Re: array problem - splitting array by Moron (Curate) on Nov 25, 2005 at 14:39 UTC
The "sometimes" is not an accident without a cause - it happens whenever there is more than one space between words. To split on the pattern that matches the actuality: `@sen = split( /\s+/, $sent );` [download] -M Free your mind	[reply] [d/l]
Re: array problem - splitting array by tirwhan (Abbot) on Nov 25, 2005 at 10:32 UTC
`for my $word (@sen) { next if ($word =~m/\A\s\z/); do_something(word); }` [download] or `my @clean_sen = grep { !m/\A\s\z/ } @sen;` [download] Or split on arbitrary whitespace while generating the array: `@sen=split(/\s+/,$sent);` [download] Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it. -- Brian W. Kernighan	[reply] [d/l] [select]