Re: Extension proposal

Antony, Do you need any other reason than "it's like Python?" :) First, there's the memory conservation. You don't need to pre-allocate an array. Second, it's an objectified range iterator / generator. This means you can combine it with SPL and even your own custom iterators. For example: here's some, arguably nasty, code: <php? // filters odd values, after squaring values 1 .. 20 // the filters are not included, but are four-line // descendents of FilterIterator foreach ( new OddOnlyFilter(new SquareFilter(xrange(1, 20))) as $i ) // do something // ...and... // $x = new AppendIterator; $x->append(xrange(1, 7)); $x->append(xrange(929, 429, -100)); foreach ($x as $i) // do something ?> My examples are bad, I apologize. The potential is difficult to convey without a complicated real-world example. The whole reason for the extension is for a 3x+ improvement over my reference implementation. It's not revolutionary or anything, but offers a little more flexibility and brings something to PHP that's already in other languages. On 10/26/07 12:19 AM, in article 472194F0.4070401@daylessday.org, "Antony Dovgal" <tony@daylessday.org> wrote: > On 26.10.2007 03:17, Paul Chandler wrote: >> Hello, >> >> I have a very simple extension on SourceForge that I'd like to release with >> PECL. In a nutshell, it's an iterator-based replacement for range(), like >> Python's. It's intended use is within foreach loops. I don't think >> it'll be >> a high-demand extension, but Python converts might appreciate it. >> >> <?php >> foreach (range(0, 1000000) as $i) // do something >> >> // vs. // >> >> foreach (xrange(0, 1000000) as $i) // do something >> ?> > > What's the advantage of it? (except that it's like Python). > Also I don't see any differences from range() in the example code given above.