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Postings from March 2022
On 2022-03-10 6:36 p.m., demerphq wrote: > Agreed. > > Fwiw The opposite outcome, forcing a value to be a number internally would be: > > $num = 0+$num; > > Although saying that I wonder what we do these days with > > $num += 0; > > I haven't checked but I hope the two produce the same outcome. I have zero doubt those produce the same outcome. Any "foo=" operators are just shorthands for assigning the result of "foo", and so the type of $num must be a number because "+" is the operation. BUT, strictly speaking, the equivalence is ACTUALLY these 2: $num = $num + 0; $num += 0; It gives the same result the other way only because + is commutative. Theoretically, if we had a non-commutative "foo" operator such that foo(x,y) and foo(y,x) returned a result of a different type depending on the arguments, then what exactly you expand the "foo=" to for argument order is important. But as long as we keep the correct order in mind, absolutely they should be the same outcome. -- Darren DuncanThread Previous | Thread Next