Re: Destructing Struct

[Steven Schveighoffer via Digitalmars-d-learn]

On 2/21/18 6:24 AM, Jiyan wrote:

I think i found my solution: is it __xdtor? :P


Yes, that is the function that will run *recursively* all the 
destructors (just __dtor runs the destructor method if you provided 
one). But I'd recommend as the others did, using destroy.


-Steve

Re: Destructing Struct

[Adam D. Ruppe via Digitalmars-d-learn]

On Wednesday, 21 February 2018 at 12:07:47 UTC, ketmar wrote:

`p.destroy` will call the dtors for you.


So it is the same function but I prefer to always write it:

.destroy(p);

yes, a leading dot. This ensures you call the top-level destroy 
function instead of any members which may not do the same thing.

Re: Destructing Struct

[ketmar via Digitalmars-d-learn]

Jiyan wrote:


Hi :),

What i thought was that when i create a struct dynamically i can just 
deconstruct it with __dtor lets say:


struct U {...}
struct S {... private U _member;}

S* p;
p = cast(S*)malloc(S.sizeof);

// just run that if it compiles, for simplicity
// we dont use __traits(compiles, ...)
p.__dtor;

The thing here is that this doesn't work because of when S has an element 
that that is private and has a __dtor itself, the __dtor from U doesnt 
get called before the call of __dtor from S - or after.


Is there any way with traits or sth to do that?

Are delete, destroy or any other functions the standard library working 
here?
I would prefer a solution that can be build by myself - so without the 
standard library for example with traits.


Thanks :)


`p.destroy` will call the dtors for you. you'd better not use `__`-frefixed 
symbols yourself, as they aren't actually a part of a language, they're just

implementation details.

Re: Destructing Struct

[Jiyan via Digitalmars-d-learn]

On Wednesday, 21 February 2018 at 11:12:01 UTC, Jiyan wrote:

Hi :),

What i thought was that when i create a struct dynamically i 
can just deconstruct it with __dtor lets say:


struct U {...}
struct S {... private U _member;}

S* p;
p = cast(S*)malloc(S.sizeof);

// just run that if it compiles, for simplicity
// we dont use __traits(compiles, ...)
p.__dtor;

The thing here is that this doesn't work because of when S has 
an element that that is private and has a __dtor itself, the 
__dtor from U doesnt get called before the call of __dtor from 
S - or after.


Is there any way with traits or sth to do that?

Are delete, destroy or any other functions the standard library 
working here?
I would prefer a solution that can be build by myself - so 
without the standard library for example with traits.


Thanks :)


I think i found my solution: is it __xdtor? :P

Destructing Struct

[Jiyan via Digitalmars-d-learn]

Hi :),

What i thought was that when i create a struct dynamically i can 
just deconstruct it with __dtor lets say:


struct U {...}
struct S {... private U _member;}

S* p;
p = cast(S*)malloc(S.sizeof);

// just run that if it compiles, for simplicity
// we dont use __traits(compiles, ...)
p.__dtor;

The thing here is that this doesn't work because of when S has an 
element that that is private and has a __dtor itself, the __dtor 
from U doesnt get called before the call of __dtor from S - or 
after.


Is there any way with traits or sth to do that?

Are delete, destroy or any other functions the standard library 
working here?
I would prefer a solution that can be build by myself - so 
without the standard library for example with traits.


Thanks :)