[ABE.pm] perl 5.10 rules! - say what?

[Ricardo SIGNES]

Here's another little one:  say

say is stolen from Perl 6.  It's just like print, but it prints a newline when
you're done.  Seriously, that's it!

  print "Nice to meet you, ", $ENV{USER}, ".\n";
  say "Nice to meet you, ", $ENV{USER}, ".";

Those lines do the same thing.

What's the big deal?  Well, you save four keystrokes, for one, multiplied by
every time you would've used print.

Then there's this:

  print @lines, "\n";
  say @lines;

There you saved eight keystrokes!

Is this a really small win?  I don't know, I think it's a tiny improvement that
you'll really grow to love.

There's one thing to keep in mind:  because "say" wasn't a keyword before 5.10,
you'll want to let perl know that you want it to be one now.  There are a few
ways to do that:

  use feature 'say';   # turn on the "say" feature in this block or file
  use feature ':5.10'; # turn on all 5.10 features in this block or file

  perl -E 'say "Hello, world!"' # like perl -e, but with all features

-- 
rjbs