Jump to content

VEX : Passing a reference of a struct to another struct


superdjo

Recommended Posts

Hey everyone,

I'm having a hard time trying to pass a struct to another struct as reference.

All I can seem to be doing is a straight up copy. I know passing variables to methods or functions in vex are references but as soon as they get assigned they are copied into the new variable.

Here is a brief example of what I'm talking about.

 

struct test_1{
 int a = 123;
 void print(){
      printf("test_1 a value : %f\n",a);
 }
}
struct test_2{ 
 test_1 t;
 void print(){ 
      printf("test_2 a value : %f\n",t.a); 
 }
} 
cvex test(){ 
 test_1 t1 = test_1();
 test_2 t2 = test_2(t1);
 t1.a = 456;
 t1->print();
 t2->print();
}


The output will be

test_1 a value : 456

test_2 a value : 123

I would expect it to be 456 for both if they are passed as reference.

I've tried passing the struct in a method instead of the implicit constructor and same result. struct test_1 gets copied into the t variable of struct test_2

I basically have a few objects/structs referencing a main config/parameter struct. but when any one of these structs updates the config it doesn't get updated in the other structs. I basically need to go and reassign the struct to all other objects/struct again..... Is there no other way ? also I have many of these objects reading the main struct and it seems like a waste of memory to have to copy the struct over and over into each object/structs.

Any help here would be greatly appreciated

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...