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Re: reading scalars from text file

by mrbbking (Hermit)
on May 16, 2002 at 16:38 UTC ( #167047=note: print w/replies, xml ) Need Help??


in reply to reading scalars from text file

Your @Variables is an array, each element of which is a line in the file. That's what the diamond operator gives you in list context.

So, $Variables[3] is the whole fourth line from the file called 'variables.dat'. That's not what you want. You're looking for the fourth *field* in whichever line. (I'm assuming those are tab-separated valued, BTW...)

Without resorting to DBD::CSV or Text::CSV_XS (which may or may not be the best idea in your case), you can do it like this, after the code you posted in the root node:

foreach ( @Variables ){ my $user_id = ''; my @elements = split /\t/; my $user_name = $elements[3]; # do something wonderful with $user_name; }

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[Corion]: Two-way data binding means that if you change something in a text box, the corresponding variable in your Javascript gets updated immediately as well, and if you then change the variable, the corresponding text box also gets updated
[Corion]: That is a horrible approach that was also taken by Access, but if you have hooks that prevent automatic saving to the database, it is incredibly handy

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