On 11/12/2013 04:47 PM, bearophile wrote:
Charles Hixson:
I had tried "return bytes.cmp(b.bytes);" , but it didn't occur to me
that the error meant I should have used a copy? Does this syntax
mean that what's being compared is a dynamic array copy of the
original static array?
They are not copies, just slices. In case of doubts take a look at the
generated assembly.
Bye,
bearophile
My assembly is pretty bad, the last one I was fluent in was i6502...I
was never really fluent in m68000. And those were back when I was using
an Apple.
OTOH, while slice is a better term for what I meant...generally when one
makes a copy of an object, one is only duplicating the pointers to it,
and that's what I meant. (Though since the original was a struct, slice
is a much better term. Still, on a 64 bit machine the and an 8 byte
key, the slice is twice the size of the original. And the only
benefit(?) is that if the dup was changed, so would be the original.
Which is what the I thought the const at the end of the declaration was
supposed to prevent.)
--
Charles Hixson
