On 2019-10-29 23:28:35 +0000, Simen Kjærås said:
On Tuesday, 29 October 2019 at 22:24:20 UTC, Robert M. Münch wrote:
I quite often have the pattern where a value should be read just once
and after this reset itself. The idea is to avoid that others read the
value by accident and get an older state, instead they get an
"invalid/reset" value.
Is there a library function that can mimic such a behaviour?
Something like this?
T readOnce(T)(ref T value) {
auto tmp = value;
value = T.init;
return tmp;
} unittest {
int i = 3;
assert(i.readOnce == 3);
assert(i == 0);
}
If so, no, there is no library function for it, but feel free to use
the above. You may very well have to change T.init to something more
fitting for your use case, of course.
Hi, that looks very good. I forgot about the UFCS possibility. That's
very good because it works on basic types too. Thanks :-)
--
Robert M. Münch
http://www.saphirion.com
smarter | better | faster
