in reply to Always leaving one space in file

From your description it seems that the tellmessage parameter is a textarea - but you use it as if it was a multiple choice scrolling list.

And to answer your question - the my @changes = param('tellmessage'); sets the @changes list to a one element list (if the tellmessage parameter is empty than the list contains one empty string). Thus the foreach loop allways is executed once - and when the parameter is empty the print statement prints the "\n" character.

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Re: Re: Always leaving one space in file
by Anonymous Monk on Apr 23, 2003 at 15:23 UTC
    I tried this with no success:

    my $list;
my @changes = param('tellmessage');

######################

if (@changes eq " ") {
  exit
}

######################

open(FILE, ">eetnlinks.txt") || die "Can't open file!";
  flock(FILE, 2) || die "Can't lock file!";
  #truncate(FILE,0);
    foreach $list (@changes) {
      chomp ($list);
      print FILE "$list\n";    
    }    
close(FILE);

    [download]
    Or could I count the length of @changes and compare it: 
    if (@changes > 1) {
  exit;
}

    [download]
    If that would work, I don't know how to count the length of the string... ?
[reply]
[d/l]
[select]
      Try not opening the file unless you have data in the @changes array: 
      if (@changes) {
   # do stuff here
}

      [download]
      I don't know how to count the length of the string...?: 
      my $length = length $some_string;

      [download]
      -- vek --
[reply]
[d/l]
[select]
      Why do you insist on a list? Does the tellmesage parameter contain multiple values? If it was a textarea than it contains just one value and you can retrieve it with: 
      my $change = param('tellmessage');

      [download]
[reply]
[d/l]
[select]
        It is a TEXTAREA not a TEXTBOX

        There is one link perline separated by a pipe "|"

        my site|http://www.whatever.com|blank

        [download]
        I tried using $change, but it wouldn't work :(
[reply]
[d/l]
      what I meant was: 
      if (@changes eq " ") {
  @changes eq ""}
}

      [download]
[reply]
[d/l]

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