PrimitiveRef ?
Andre via Digitalmars-d-learn
digitalmars-d-learn at puremagic.com
Mon Mar 23 09:58:48 PDT 2015
Hi,
I read that if a structure only contains a reference, it will
behave like a reference type in function calls (needed for
specifying reference behavior in a type tuple).
I need exactly that behavior. I am currently unsure whether it is
possible at all to have such a construct which works at user side
exactly like a boolean (booleans can be assigned and directly
compared with ==) but internally are pointers...
(The coding does not compile)
Kind regards
André
struct PrimitiveRef(T)
{
private T* _value;
alias _value this;
void opAssign(T v)
{
_value = v;
}
}
alias BoolRef = PrimitiveRef!bool;
void test(BoolRef b)
{
b = true;
}
void main()
{
BoolRef b = false;
test(b);
assert(b == true);
}
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