• Norm (24/24) Mar 26 2018 Hi All,
• Adam D. Ruppe (4/5) Mar 26 2018 I'd also add `@disable this();` and then a `static O make() {
• Norm (2/7) Mar 26 2018 Perfect, thanks.
• Norm (17/22) Mar 28 2018 OK, that got me over the first hurdle but I still cannot use RAII
• Adam D. Ruppe (3/6) Mar 28 2018 You'll have to do it all the way up (unless you can use a
• Norm (2/8) Mar 28 2018 OK, thanks.

Norm <norm.rowtree gmail.com> writes:

Hi All,

What's the best way to do this in D?

E.g.

---
struct O
{
   int* value;
    disable this(this);
/+
   this()
   {
     this.value = theAllocator.make!int(99);
   }
+/
   ~this()
   {
     theAllocator.dispose(this.value);
   }
}

O obj = O(); // Ideally this would be allocated but it simply run 
O.init
---

Thanks
Norm

Adam D. Ruppe <destructionator gmail.com> writes:

On Tuesday, 27 March 2018 at 02:35:23 UTC, Norm wrote:
 What's the best way to do this in D?

I'd also add ` disable this();` and then a `static O make() { 
return O(theAllocator.make!int(99)); }`

than you construct it with that static make function.

Norm <norm.rowtree gmail.com> writes:

On Tuesday, 27 March 2018 at 02:43:15 UTC, Adam D. Ruppe wrote:
 On Tuesday, 27 March 2018 at 02:35:23 UTC, Norm wrote:
 What's the best way to do this in D?

 I'd also add ` disable this();` and then a `static O make() { 
 return O(theAllocator.make!int(99)); }`

 than you construct it with that static make function.

Perfect, thanks.

Norm <norm.rowtree gmail.com> writes:

On Tuesday, 27 March 2018 at 02:43:15 UTC, Adam D. Ruppe wrote:
 On Tuesday, 27 March 2018 at 02:35:23 UTC, Norm wrote:
 What's the best way to do this in D?

 I'd also add ` disable this();` and then a `static O make() { 
 return O(theAllocator.make!int(99)); }`

 than you construct it with that static make function.

OK, that got me over the first hurdle but I still cannot use RAII 
with struct member vars. E.g.

---
struct Resource {
   this() {allocate_something();}
   ~this() {release_something();}
}

struct S {
   Resource resource;
}

---

Is there a way to do this in D, or does it require special 
"create" functions for every struct that has a RAII-like struct 
as a member?


Thanks,
Norm

Adam D. Ruppe <destructionator gmail.com> writes:

On Thursday, 29 March 2018 at 04:12:38 UTC, Norm wrote:
 Is there a way to do this in D, or does it require special 
 "create" functions for every struct that has a RAII-like struct 
 as a member?

You'll have to do it all the way up (unless you can use a 
constructor with an argument and call that instead)

Norm <norm.rowtree gmail.com> writes:

On Thursday, 29 March 2018 at 04:16:55 UTC, Adam D. Ruppe wrote:
 On Thursday, 29 March 2018 at 04:12:38 UTC, Norm wrote:
 Is there a way to do this in D, or does it require special 
 "create" functions for every struct that has a RAII-like 
 struct as a member?

 You'll have to do it all the way up (unless you can use a 
 constructor with an argument and call that instead)

OK, thanks.