Re: Opinion: where Perl5 wasn't attractive for me

[oiskuu]

Some options always present themselves.

package lvals {
  sub import {
    shift;
    no strict 'refs';
    *{caller.q(::).$_} = do{ my $x; sub () :lvalue {$x} } for @_;
  }
}
1;

use lvals qw(i j matrix sum);

matrix = [([1..10]) x 10];

for(i = 0; i < 10; i++) {
  for(j = 0; j < 10; j++) {
    sum += matrix->[i][j];
  }
}
print "Matrix sum is ", sum;

Count the sigils. Yay!

/me quickly hides under the rock.

[BrowserUk]

I missed this. I'm so glad that it was a slow night/morning when astroboy posted.

++ and props!

[LanX]

+0.9 upvote

full points only if you change the package block into a backwards compatible way! ;-)

PS: lvalue subs are unfortunately a little bit slow compared to real scalar variables...

[McA]

PS: lvalue subs are unfortunately a little bit slow compared to real scalar variables...

Like in real life: You have to spend some $$ to get faster... :-)

Regards
McA

P.S.: After working with Python for some time I think that sigils are not too bad. They give hints for the reader. But sure, it doesn't look so clean.

[LanX]

> They give hints for the reader.

Yep my main argument, better that this hungarian notation.

Even more sigils for refs would be handy and help avoiding explicit dereferencing.

But predominantly sigils are needed for imposing context.

> But sure, it doesn't look so clean.

and as always it's mostly about aesthetics...

... I was pondering about a highlighting add-on for emacs to hide sigils and semicolons with background color, to make Perl look like Ruby ;-)

[astroboy]

nice!