Re: auxiliary variables
At 12:00 AM +0100 12/20/04, [EMAIL PROTECTED] wrote: Please Lets have two scalars variables in Perl and some operation under them like an adding. x = a + b I would like know, witch auxiliary variables are creating on the in-line code like a Parrot somethink like T = a + b x = T ??? For simple expressions there's no need for temps. "x = a + b" translates to "add x, a, b". If you have more complex expressions and need temps, then generally the compiler will choose the correct temp type, since it's normally language dependent. (Though Parrot's Undef is generally clever enough to be a good generic destination, as it morphs to most destination types on assign) -- Dan --it's like this--- Dan Sugalski even samurai [EMAIL PROTECTED] have teddy bears and even teddy bears get drunk
Re: auxiliary variables
[EMAIL PROTECTED] writes: > Please > Lets have two scalars variables in Perl and some operation under > them like an adding. > x = a + b > I would like know, witch auxiliary variables are creating > on the in-line code like a Parrot > > somethink like T = a + b > x = T ??? > > and on witch circumstances depends it. > Can I keep clear of creating this auxiliary variables anywise ? We have no idea when they'll come up, because we haven't even layed out the groundwork for the code generator yet. However, such auxilliary variables show up in a lot of places. For instance, when you add two PMCs, you need an Undef in which to put the result. I don't entirely agree with this semantic: I think the result PMC should be created by the add function itself. This is how it works now: $P0 = new PerlInt $P0 = 3 $P1 = new PerlInt $P1 = 4 $P2 = new Undef $P2 = $P0 + $P1 If that counts as an auxilliary variable, you'll see them all over the place. And there's not really a way you can avoid it. In fact, I don't think you could avoid it if you wrote in bare PIR without going through a compiler. Luke
auxiliary variables
Please Lets have two scalars variables in Perl and some operation under them like an adding. x = a + b I would like know, witch auxiliary variables are creating on the in-line code like a Parrot somethink like T = a + b x = T ??? and on witch circumstances depends it. Can I keep clear of creating this auxiliary variables anywise ? Thanks a lot Tomas -- A za kolik kupujete ELEKTRO Vy? http://www.MALL.cz/penezenka Ověřte si přes SMS, kolik se dá UŠETŘIT!
