On Thursday, 31 July 2014 at 19:43:00 UTC, bearophile wrote:
Eric:
Suppose I have some memory allocated on the heap, and I have
two pointers pointing to the beginning and end of a contiguous
segment
of that memory. Is there a way I can convert those two
pointers
to an array slice without actually copying anything within the
segment?
Use something like this (but make sure the length is correct):
auto mySlice = ptr1[0 .. ptr2 - ptr1];
Bye,
bearophile
Thanks. That really works. I timed doing
auto mySlice = ptr1[0 .. ptr2 - ptr1]; 1,000,000 times
versus
auto mySlice = ptr1[0 .. ptr2 - ptr1].dup; 1,000,000 times
and I am quite convinced the data is not being copied.
