On Sunday, 4 November 2018 at 21:26:23 UTC, kinke wrote:
> On Sunday, 4 November 2018 at 21:08:56 UTC, kinke wrote:
>> `enum c = new C()` doesn't imply that the instance lives at runtime too.
>
> To make this point clearer: this works, but the instance doesn't live at runtime:
>
> ```
> class C { int foo() { return 123; } }
> enum i = new C().foo();
>
> void main()
> {
>     import core.stdc.stdio;
>     printf("%d\n", i); // i is a 123 literal
> }
> ```

This is kind of interesting...

´´´
import std.stdio;

class C
{
	int member;

	int foo()
	{
		member++;
		return 123 + member;
	}
}

enum i = new C().foo();
enum u = &(new C().foo);

void main()
{
    import core.stdc.stdio;
    printf("%d\n", i); // 124
	writeln(u());  // 124
	writeln(i);    // 124
	writeln(u());  // 125
}
´´´

On Sunday, 4 November 2018 at 22:06:28 UTC, Alex wrote:
>>
>> To make this point clearer: this works, but the instance doesn't live at runtime:
>>
>> ```
>> class C { int foo() { return 123; } }
>> enum i = new C().foo();
>>
>> void main()
>> {
>>     import core.stdc.stdio;
>>     printf("%d\n", i); // i is a 123 literal
>> }
>> ```

Or even better:

´´´
class C
{
	int member;
	int foo()
	{
		member++;
		return 123 + member;
	}
}

enum i = u();
enum u = &(new C().foo);

void main()
{
    import std.stdio : writeln;
    writeln(i); 	// 124
	writeln(u());   // 125
	writeln(i); 	// 124
	writeln(u()); 	// 126
}
´´´

On Sunday, 4 November 2018 at 22:23:18 UTC, Alex wrote:
> On Sunday, 4 November 2018 at 22:06:28 UTC, Alex wrote:
>>>
>>> To make this point clearer: this works, but the instance doesn't live at runtime:
>>>
>>> ```
>>> class C { int foo() { return 123; } }
>>> enum i = new C().foo();
>>>
>>> void main()
>>> {
>>>     import core.stdc.stdio;
>>>     printf("%d\n", i); // i is a 123 literal
>>> }
>>> ```
>
> Or even better:
>
> ´´´
> class C
> {
> 	int member;
> 	int foo()
> 	{
> 		member++;
> 		return 123 + member;
> 	}
> }
>
> enum i = u();
> enum u = &(new C().foo);
>
> void main()
> {
>     import std.stdio : writeln;
>     writeln(i); 	// 124
> 	writeln(u());   // 125
> 	writeln(i); 	// 124
> 	writeln(u()); 	// 126
> }
> ´´´

So enum-delegates are stored in mutable memory at runtime?
Now this looks like a bug.

On Sunday, 4 November 2018 at 22:31:48 UTC, lngns wrote:
>
> So enum-delegates are stored in mutable memory at runtime?
> Now this looks like a bug.

Just followed the idea of pointer in the enum... Didn't think this is possible ;)