• ChangLong (21/21) Jan 11 2018 When I try add some sub type for struct with mixin template,
• aliak (20/41) Jan 11 2018 Hi, can you explain a bit more? The question is not entirely
• ChangLong (12/58) Jan 11 2018 If PublicName is complex type, require has some private type

ChangLong <changlon gmail.com> writes:

When I try add some sub type for struct with mixin template, 
seems there is no way to hidden the private type.

Is there a way to hidden type from mix template like Voldemort 
type ?

fake code:

mix template TypeX () {
     alias This = typeof(this);

     static struct Unique {
        This* _ptr ;
     }
     static struct Helper {
           private Unique data;
      }
      alias TypeX = {
          alias PublicName = Helper ;
      }
}

struct Node {
     mixin TypeX!();
     PublicName helper;
}

aliak <something something.com> writes:

On Thursday, 11 January 2018 at 08:56:11 UTC, ChangLong wrote:
 When I try add some sub type for struct with mixin template, 
 seems there is no way to hidden the private type.

 Is there a way to hidden type from mix template like Voldemort 
 type ?

 fake code:

 mix template TypeX () {
     alias This = typeof(this);

     static struct Unique {
        This* _ptr ;
     }
     static struct Helper {
           private Unique data;
      }
      alias TypeX = {
          alias PublicName = Helper ;
      }
 }

 struct Node {
     mixin TypeX!();
     PublicName helper;
 }

Hi, can you explain a bit more? The question is not entirely 
clear to me. Can you mixin a struct of type PublicName and just 
hide everything in there?

mixin template TypeX() {
     struct PublicName {
         private alias This = typeof(this);
         private struct Unique {
			This* _ptr;
		}
         private Unique _data;
         alias _data this;
     }
}

void main(string[] args) {
     mixin TypeX;
     PublicName helper;
     helper._ptr.writeln;
}

Cheers

ChangLong <changlon gmail.com> writes:

On Thursday, 11 January 2018 at 21:30:43 UTC, aliak wrote:
 On Thursday, 11 January 2018 at 08:56:11 UTC, ChangLong wrote:
 When I try add some sub type for struct with mixin template, 
 seems there is no way to hidden the private type.

 Is there a way to hidden type from mix template like Voldemort 
 type ?

 fake code:

 mix template TypeX () {
     alias This = typeof(this);

     static struct Unique {
        This* _ptr ;
     }
     static struct Helper {
           private Unique data;
      }
      alias TypeX = {
          alias PublicName = Helper ;
      }
 }

 struct Node {
     mixin TypeX!();
     PublicName helper;
 }

 Hi, can you explain a bit more? The question is not entirely 
 clear to me. Can you mixin a struct of type PublicName and just 
 hide everything in there?

 mixin template TypeX() {
     struct PublicName {
         private alias This = typeof(this);
         private struct Unique {
 			This* _ptr;
 		}
         private Unique _data;
         alias _data this;
     }
 }

 void main(string[] args) {
     mixin TypeX;
     PublicName helper;
     helper._ptr.writeln;
 }

 Cheers

If PublicName is complex type,  require  has some private type 
information.  there is noway to hidden the private type from the 
scope of mixin.  the purpose is hidden helper._ptr from main 
function to avoid name conflict.

I try use mixin fo modify struct to allow it has some kind zero 
cost abstract, or memory manage function.    since the system is 
complex it will import a lot symbol into the class.

I has to put the mix template into struct, since I has to add 
member with type from mix template.  and I also want to avoid 
access ref_count from the struct body(and a lot other name 
conflict)