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Re: Perl-ish way to create hash from array

by kennethk (Abbot)
on Jul 09, 2013 at 17:30 UTC ( #1043360=note: print w/replies, xml ) Need Help??


in reply to Perl-ish way to create hash from array

I'd consider it Perlish, because it gets the job done and is quite legible. However, you could do it on one line with a map if that feels Perlier to you:
my %csvColumns = map {$csvColumns[$_] => $_} 0 .. $#csvColumns;
Or you could use an explicit iterator with a do to limit scope:
my %csvColumns = do {my $i = 0; map {$_ => $i++} @csvColumns};
I know lots of folks would describe those as Perlier, though would not be using the phrase in a positive way.

#11929 First ask yourself `How would I do this without a computer?' Then have the computer do it the same way.

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[1nickt]: For multiple dirs use iterator(): $it = path("/foo")-> iterator; while ( my $path = $it->() ) {...}
[1nickt]: (also skips . and .. automatically, and follows subdirs if you set <c\>recurse => 1</c>
[1nickt]: $it = path("/foo")-> iterator(recurse => 1 );

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