What's happening in this Perl foreach loop? -

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i have perl code:

foreach (@tmp_cycledef) {  chomp;  ($cycle_code, $close_day, $first_date) = split(/\|/, $_,3);  $cycle_code =~ s/^\s*(\s*(?:\s+\s+)*)\s*$/$1/;  $close_day  =~ s/^\s*(\s*(?:\s+\s+)*)\s*$/$1/;  $first_date =~ s/^\s*(\s*(?:\s+\s+)*)\s*$/$1/;   #print "$cycle_code, $close_day, $first_date\n";  $cycledef{$cycle_code} = [ $close_day, split(/-/,$first_date) ]; }

the value of tmp_cycledef comes output of sql query:

select cycle_code,cycle_close_day,to_char(cycle_first_date,'yyyy-mm-dd')   cycle_definition d   order cycle_code;

what happening inside for loop?

huh, i'm surprised no 1 fixed :)

it looks person wrote trying trim leading , trailing whitespace each field. it's odd way that, , reason overly concerned interior whitespace in each field despite anchors.

i think should same trimming whitespace around delimiter in split:

foreach (@tmp_cycledef)     {     s/^\s+//; s/$//; #leading , trailing whitespace on whole string     ($cycle_code, $close_day, $first_date) = split(/\s*\|\s*/, $_, 3);      $cycledef{$cycle_code} = [ $close_day, split(/-/,$first_date) ];     }

the key thinking split considering parts of string want throw away, not separates fields want.


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