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SciDude's scratchpad

by SciDude (Friar)
on Jun 01, 2004 at 21:05 UTC ( #358605=scratchpad: print w/replies, xml ) Need Help??

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  1. or download this
    #                 my $pid;
    #                 if (!defined($pid = fork)) {
    $pid = fork; 
    exec 'mozilla', '-url', $url unless defined $pid;
  2. or download this
  3. or download this
    use Cwd;
    my $dir = getcwd; #find root of script
    mkdir $dir
  4. or download this
    use Cwd 'chdir';  #That overrides chdir to update $ENV{PWD}
    my $dir = getcwd; #find root of script
    chdir $dir;       #move into the new directory
    print $ENV{'PWD'};
    #do some stuff in $dir here
  5. or download this
    my ($sec2, $min2, $hour2) = localtime(time);
    print "Whole hours remaining until midnight: (24-$hour2)=";print 24-$h
    +our2;print" hours\n";
    else {
    print "There are ";print 2-$hour2;print" hour(s) and ";print 60-$min2;
    +print " minute(s) until the new day.";

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[Corion]: Meh. SQL window functions would even make pagination easy/trivial (but not performant), as rank() over (partition by user order by timestamp) / 10 as page would give me a page number for each item, with 10 items per page.
[Corion]: Of course, the query performance for "all items on page 10" is likely worse than rank() between 100 and 109 , but if that means I can write 15 lines of SQL instead of needing to think about how to partition things and how to encode the page size...
[Corion]: ... that would be nice. But alas, I'm currently tied to SQLite as minimum implementation, and it doesn't implement window functions :-(

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