https://issues.dlang.org/show_bug.cgi?id=23946
Issue ID: 23946
Summary: specifications state that "there can only be
destructor" which can be confusinf because of mixin
templates
Product: D
Version: D2
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: P1
Component: dlang.org
Assignee: [email protected]
Reporter: [email protected]
ยง2 of https://dlang.org/spec/class.html#destructors states that "There can be
only one destructor per class, the destructor does not have any parameters, and
has no attributes. It is always virtual."
However this creates confusion as mixin templates are allowed to introduce a
destructor.
eg.
```
import std;
mixin template AddNewDtor()
{
~this()
{
writeln("Mixin dtor");
}
}
class Foo
{
~this()
{
writeln("Class dtor");
}
mixin AddNewDtor;
}
void main()
{
{
auto s = scoped!Foo;
// prints `Mixin dtor`
// prints `Class dtor`
}
}
```
The specifications should be more clear. While some might know that there are
the internal __dtor and __xdtor functions, the specs should mention that
"destructors introduced by mixin templates are implicitly called by the main
destructor and does not represent a real destructor" in
https://dlang.org/spec/template-mixin.html.
That's just a suggestion, any other solution that would prevent a possible
confusion for new comers is welcome.
See NG thread :
https://forum.dlang.org/post/[email protected]
--
