Re: Is there a more functional regex syntax?

[kennethk]

in reply to Is there a more functional regex syntax?

What about something more like:

  $range =~ /^(\d+)(?:-(\d+))?$/;
  $total_min += $1;
  $total_min += $2//$1;

I personally think holding onto $min and $max reads easier, but I can understand the desire for conciseness.

[kennethk]

Or, as an improvement in the regex, /^(?=(\d+))(?:\d+-)?(\d+)$/, so that both $1 and $2 are always defined. So, as 1 line,

$totals[$_] += ($range =~ /^(?=(\d+))(?:\d+-)?(\d+)$/)[$_] for 0,1;

Or more simply, if you want to keep the variables separate,

  $total_min += ($range =~ /^(\d+)/)[0];
  $total_max += ($range =~ /(\d+)$/)[0];

[smls]

Thank, this is what I've been looking for!

It's not extremely pretty, but it should scale nicely for the general case of needing the result of a regex string extraction as a right-hand-side value.

PS: The regex suggested by tobyink above can make the single-line case much more readable: /(\d+)/g

[kennethk]

The regex suggested by tobyink above can make the single-line case much more readable

The advantage of mine is that it actually enforces format, which may or may not be of concern. I also like that you expect two values and you get two values; a little less slight of hand for maintenance. But I do appreciate the elegance of his choice of indices.

Also be aware you'll need to initialize @totals = (0,0) so that the index -1 doesn't map to your first term. tobyink does it, but didn't really emphasize its importance.