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Postings from September 2000
Dan Sugalski wrote: > ...would anyone object to the _binary_ operators being used > instead? They don't have short-circuit semantics, and generally don't have > any reasonable meanings for hashes and arrays. With that, instead of > writing the above code, you'd write: > > @a = @b | @c; > > nothing short-circuits but then you don't expect it to, and that's more or > less OK. The and operation would likely return the left-hand value if both > are true, and xor would return whichever of the two were true, or undef of > both (or neither) were true. > Of course they have reasonable meanings for arrays--element-wise operations (RFC 82): http://tmtowtdi.perl.org/rfc/82.html Any operation you can do on a scalar you should be able to do element-wise on a list, and certainly it's not hard to come up with situations where this is useful for non-short-circuiting bitwise operators. Bit vectors and associated masks may well be stored in lists, for instance. This discussion should probably be on -data, BTW.Thread Next