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How to multi line comment?Helpful Member! 

Kero (MIS) (OP)
20 Nov 01 2:53
Dear sir,

            I'm new perl programmer. So I can't multi line comment in my program. I must use "#" each line. How can I do?
           And if I want to know length of array. Example I have data in "@testArray". How can I get length of array?

Thanks for your help,
sesth (Programmer)
20 Nov 01 3:21
Perl doesn't support multiline comments. You can use the follwing code:

if (0) {
  ... my code

The last element of an array is returned by

$len = $#testArray + 1;

Kero (MIS) (OP)
20 Nov 01 4:21
It's the best tips for me.
Thanks a lot Thomas.

Helpful Member!  toolkit (Programmer)
20 Nov 01 4:47
Actually, perl does support multiline comments. See the perlpod (Plain Old Documentation) manual pages for more information. An example:

print "hello ";


This is a comment
And so is this


print "there\n";

Cheers, Neil
tsdragon (Programmer)
20 Nov 01 9:57
You can also get the length of an array by using the arrayname in a scalar context:

$len = scalar(@array);

Tracy Dryden

Meddle not in the affairs of dragons,
For you are crunchy, and good with mustard.

rycamor (Programmer)
20 Nov 01 11:10
Also, To (mis?) quote Larry Wall, "If your editor can't put a column of sharps on the left margin, then you need real editor." (or words to that effect)

In other words, it's easy if you have an editor that lets you work in column mode; just drag a line down the left side, and hit the # key once.
tsdragon (Programmer)
20 Nov 01 11:19
My editor (EditPlus) has a command that allows you to highlight a group of lines and prefix them all with one or more comment characters.

Tracy Dryden

Meddle not in the affairs of dragons,
For you are crunchy, and good with mustard.

toolkit (Programmer)
21 Nov 01 4:53
vi qualifies as a real editor then - with a little effort
MikeLacey (MIS)
22 Nov 01 17:59
vi is a real editor for real programmers

Email welcome if you're in a hurry or something -- but post in tek-tips as well please, and I will post my reply here as well.

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