Julian Salazar, el 16 de julio a las 18:14 me escribiste: > I'm wondering, who here would use a swap operator if it were available? > > Something that would be normally achieved through: > temp = a; > a = b; > b = temp; > or for the more bit-wise ;) > a ^= b; > b ^= a; > a ^= b; > > It's something I've never actually seen implemented in any higher level > language, but finds uses in linked lists, binary trees, and other data > structures and algorithms. Temp wouldn't need to be an addressable value, so > theoretically this operator (which I propose to be "<=>") could be > compiler-optimized into an x86 xchg opcode for example. It could properly > deal > with references, data structures, class instances, etc. and not require the > programmer to worry about these details. > > I know that the chance of it actually being implemented is close to nil, but > even a template in the standard library for it would be cool (or did I miss > something?). Or am I being deluded? :)
A more general solution is supporting tuples in the language, then you can do something like: a, b = b, a; There you go (that's actually valid Python code, for example). -- Leandro Lucarella (luca) | Blog colectivo: http://www.mazziblog.com.ar/blog/ ---------------------------------------------------------------------------- GPG Key: 5F5A8D05 (F8CD F9A7 BF00 5431 4145 104C 949E BFB6 5F5A 8D05) ---------------------------------------------------------------------------- En ese preciso instante ella con un leve gemido nos dice: "Ponla, Tito! Ponla!". -- Sidharta Kiwi