On 26/03/2017 7:52 AM, helxi wrote:
What's the difference between
1.
string x = "abcd";
foreach(character; x)
write(character);
and
string x = "abcd";
foreach(character; x[0..$])
write(character);
Hopefully the compiler is smart enough to ignore that slice (since its
identical in purpose).
2. is and ==
is: bit for bit comparison
==: "magic" comparison logic, supports e.g. opEquals on classes.
3. pointer and address and reference?
pointer: a place in memory! or hdd.. or well pretty much anywhere the
kernel maps it to, just assume that there is some data there that you
may be able to do some, all or none of these things read, write,
execute. May also be invalid aka null aka 0.
reference: pointer + some other pointer generally, e.g. class instance
data pointer + typeinfo reference + vtable.