Re: [RFC] Combined Comparison Operator

Hi Davey, On Thu, Feb 13, 2014 at 12:58 PM, Davey Shafik <davey@php.net> wrote: > I've written up an RFC/Patch to gauge interest and get feedback on the > addition of a combined comparison (aka: spaceship) operator. > > You can see the RFC at: https://wiki.php.net/rfc/ > combined-comparison-operator > > This adds a new operator "(expr) <=> (expr)" that returns 0 if both > operands are equal, 1 if the left is greater, and -1 if the right is > greater. > > It works with all types (just as well as <, <=, >=, > work) and is great > for usort() callbacks for example. > > Code available here (against 5.6): https://github.com/dshafik/ > php-src/compare/add-spaceship-operator > > I'd love to get this into 5.6, not sure if we hit feature freeze yet. > Also, not sure if it needs 2/3 majority, but assumed so as pow did? > > Thoughts? > > If there is interest, I'll start adding tests. They should be fairly > trivial. > Interesting shortcut operator. I feel closure function is for the task. I would vote 0, but close to -1 since it's only useful for sorting. Is there any other use cases? Regards, -- Yasuo Ohgaki yohgaki@ohgaki.net