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Re: map grep and sort

by Tux (Abbot)
on May 25, 2013 at 12:39 UTC ( #1035250=note: print w/replies, xml ) Need Help??


in reply to map grep and sort

Why not go the whole strech and mention (and explain) Schwartzian Transform

my @img = map { $_->[0] } sort { $tsort{$Option{thumbsorting}}->() } map { my $seq = m/(\d+)/ ? $1 : 0; [ $_, $seq, (stat "$idir/$_")[7,9], lc $_, rand 1 ] + } grep { my $s = -s "$idir/$_"; $s and $s > 100 } # Sanity c +heck. Minimal image size 100 # convert can't deal with .ico files (yet) # Tk can deal with Tiff/NEF as of 804.027_501 with Tk::TIF +F grep m/\.(jpe?g|gif|x[pb]m|png|bmp|tiff?|nef)$/i => @file_ +names;

and the Guttman Rosler Transform

@out = map substr ($_, 1 + rindex $_, "\0") => sort => map "\L$_\E\0$_" => @in;

or combinations

# sort file names by the (first) sequence of digits, then by size my @sorted = map { $_->[0], sort { $a->[1] cmp $b->[1] } map { m/(\d+)/; # sort by digits in file name [ $_, pack "l>l>", $1 || 0, -s $_ ] } @filelist;

Enjoy, Have FUN! H.Merijn

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