Print Help in Perl

aagrawal84 has asked for the wisdom of the Perl Monks concerning the following question:

Replies are listed 'Best First'.
Re: Print Help in Perl by moritz (Cardinal) on Sep 11, 2008 at 16:45 UTC
On my terminal I sometimes don't see output unless it's followed by a newline. This works for me: `$ perl -e '$fnord = 23; $blee = "The magic number is $fnord."; print " +$blee\n";' The magic number is 23.` [download]	[reply] [d/l]
Re^2: Print Help in Perl by parv (Parson) on Sep 12, 2008 at 01:58 UTC
zshell 4 was\|is horrible, unlike bash 3 that I was using earlier, in this regard when I was confounded myself seeing no output from a perfectly good program. I had to tweak some option or add some workaround in zshell. Few minutes later ... a Google search (zsh print program \| script newline "no output" \| nothing) produced setopt no_prompt_cr.	[reply]
Re: Print Help in Perl by kyle (Abbot) on Sep 11, 2008 at 16:46 UTC
It works for me. I'd recommend you use strict and warnings and put a "`\n`" at the end of the string you print. `use strict; use warnings; my $fnord = 23; my $blee = "The magic number is $fnord."; print "$blee\n"; __END__ The magic number is 23.` [download] With the "`\n`" on there, it will have a line break between its output and the prompt when you run it.	[reply] [d/l] [select]
Re: Print Help in Perl by FunkyMonk (Bishop) on Sep 11, 2008 at 16:46 UTC
It works for me, but you could add a newline to your print and see if that makes a difference: `print "$blee\n";` [download]	[reply] [d/l]
Re: Print Help in Perl by CountZero (Bishop) on Sep 11, 2008 at 18:55 UTC
Could it be that you are suffering from buffering? 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	[reply]