Re: Better ways to make multi-line comments in Perl?

There's a variety of ways to add comments using POD.

Quick and dirty method to comment out some code:

=pod

    ... lines to comment out ...
    ... should be indented ...

=cut
[download]

Adding a single line comment:

=for comment Some single comment line

=cut

...

=for comment
Some single comment line

=cut
[download]

Adding a multiline comment:

=for comment Some comment
with multiple
lines.

=cut

...

=for comment
Some comment
with multiple 
lines.

=cut
[download]

Adding a multiblock coment:

=for comment

lines from
first block

lines from
next block

...

lines from
last block

=cut
[download]

Comment on Re: Better ways to make multi-line comments in Perl? Select or Download Code

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Re: Answer: Better ways to make multi-line comments in Perl? by CountZero (Bishop) on Aug 23, 2015 at 19:14 UTC
I have never seen anything wrong with `# First comment # More comments # More comments # More comments # More comments # More comments # More comments # Last comment` [download] I find the # even rather aesthetically pleasing, whereas the empty line before `=cut` is quite ugly. CountZero A program should be light and agile, its subroutines connected like a string of pearls. The spirit and intent of the program should be retained throughout. There should be neither too little or too much, neither needless loops nor useless variables, neither lack of structure nor overwhelming rigidity." - The Tao of Programming, 4.1 - Geoffrey James My blog: Imperial Deltronics	[reply] [d/l] [select]
Re: Answer: Better ways to make multi-line comments in Perl? by Anonymous Monk on Aug 23, 2015 at 10:14 UTC
Adding a multiblock coment: =for comment .... :) You meant "=begin comment ... =end comment", see perlpodspec	[reply]
Re^2: Answer: Better ways to make multi-line comments in Perl? by ww (Archbishop) on Aug 23, 2015 at 11:14 UTC
~~Actually, either works.~~ Didn't test correctly; used `=begin comment ... =cut` (which works) rather than `=begin comment ... =end comment` as AM proposed in Re: Answer: Better ways to make multi-line comments in Perl?. Fingers in gear; brain lagging behind. I found the `=begin/=end` format in http://perldoc.perl.org/perlpodspec.html#Pod-Commands\perlpodspec for 5.22 only under the heading "About Data Paragraphs and "=begin/=end" Regions" but ""=begin comment ... =end comment" does not work in AS 5.18. Granted, I'm mixing apples and ostrich eggs, above, but perlpod for 5.22 also appears (unless I'm misreading it) to suggest that `=begin formatname/=end formatname` and `=for formatname...` styles are for specialized cases only (see `formatname`, and not for run-of-the-mill comments. Spirit of the Monastery	[reply] [d/l] [select]
Re^3: Answer: Better ways to make multi-line comments in Perl? (=end =cut) by Anonymous Monk on Aug 23, 2015 at 22:30 UTC
I see what you mean, =end doesn't signal to perl "pod over, perl code starts again", =cut does that, so it would have to be =begin comment ... =end comment\n=cut Using `=for multiblock comment` has the unwanted side-effect of showing up if you use perldoc/pod2html... =pod/=cut has the same side-effect but that version is labeled quick/dirty If the intention is for #comments that aren't part of the documentation, =for comment multiline doesn't quite work for that purpose	[reply] [d/l]


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