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reply aerto <cvsc gmx.com> writes:
its possible to make this work ??

import std.stdio;


class UUsers
{
public:
     int age;
}


class users
{
public:
     int[int] uid;

}


void main() {
	
	users newuser = new users();
	newuser.uid[0].age = 23;
	writeln(newuser.uid[0].age);

}
Apr 06 2018
next sibling parent reply Alex <sascha.orlov gmail.com> writes:
On Friday, 6 April 2018 at 13:41:50 UTC, aerto wrote:

 its possible to make this work ??

 import std.stdio;


 class UUsers
 {
 public:
     int age;
 }


 class users
 {
 public:
     int[int] uid;

 }


 void main() {
 	
 	users newuser = new users();
 	newuser.uid[0].age = 23;
 	writeln(newuser.uid[0].age);

 }


It depends on what you want to achieve...
This is runnable:
```
import std.stdio;


class UUsers
{
	this(int val)
	{
		age = val;
	}
public:
     int age;
}


class users
{
public:
     UUsers[int] uid;

}


void main() {
	
	users newuser = new users();
	newuser.uid[0] = new UUsers(23);
	writeln(newuser.uid[0].age);

}
```
Apr 06 2018
parent reply Ali <fakeemail example.com> writes:
On Friday, 6 April 2018 at 14:31:49 UTC, Alex wrote:

 On Friday, 6 April 2018 at 13:41:50 UTC, aerto wrote:

 its possible to make this work ??

 import std.stdio;


 class UUsers
 {
 public:
     int age;
 }


 class users
 {
 public:
     int[int] uid;

 }


 void main() {
 	
 	users newuser = new users();
 	newuser.uid[0].age = 23;
 	writeln(newuser.uid[0].age);

 }


 It depends on what you want to achieve...
 This is runnable:
 ```
 import std.stdio;


 class UUsers
 {
 	this(int val)
 	{
 		age = val;
 	}
 public:
     int age;
 }


 class users
 {
 public:
     UUsers[int] uid;

 }


 void main() {
 	
 	users newuser = new users();
 	newuser.uid[0] = new UUsers(23);
 	writeln(newuser.uid[0].age);

 }
 ```


A question from me, since I am also still learning D
what is the difference between those following two declarations

 UUsers[int] uid; UUsers[] uid;
Apr 06 2018
parent Uknown <sireeshkodali1 gmail.com> writes:
On Friday, 6 April 2018 at 14:43:25 UTC, Ali wrote:

 On Friday, 6 April 2018 at 14:31:49 UTC, Alex wrote:

 On Friday, 6 April 2018 at 13:41:50 UTC, aerto wrote:

 [...]




 A question from me, since I am also still learning D
 what is the difference between those following two declarations

 UUsers[int] uid; UUsers[] uid;




T[U] declares an Associative Array but T[] declares a Dynamic 
Array. Some examples will help:

---
void main()
{
     char[int] s1;
     char[] s2;
     s1[1] = 'c'; //allowed, it is an Associative array. key 1 
stores value 'c'
     s2[0] = 1; //error: out of bounds of array s2
}
---

You can check out the spec[0] and the tour[1]

[0]: https://dlang.org/spec/hash-map.html
[1]: https://tour.dlang.org/tour/en/basics/associative-arrays
Apr 06 2018
prev sibling parent Ali <fakeemail example.com> writes:
On Friday, 6 April 2018 at 13:41:50 UTC, aerto wrote:

 its possible to make this work ??

 import std.stdio;


 class UUsers
 {
 public:
     int age;
 }


 class users
 {
 public:
     int[int] uid;

 }


 void main() {
 	
 	users newuser = new users();
 	newuser.uid[0].age = 23;
 	writeln(newuser.uid[0].age);

 }


This will work
import std.stdio;

class UUsers
{
public:
     int age;

}


class users
{
public:
     UUsers[] uid;

}


void main() {

	users userList = new users();

	userList.uid ~=  new UUsers();

         userList.uid[0].age = 24 ;

	writeln(userList.uid[0].age);
}

Let me try to explain why
Basically, what you wanted to do is have two classes
one will hold user's information, and another holding a user list

For the second class to hold user list
this line

 int[int] uid;


became this line

 UUsers[] uid;


In you code, there was no relation between the two classes
Then in your main

You instantiate your users list object

 users userList = new users();


Then you instantiate a user object and append it to the list (~= 
is the append operator)


 userList.uid ~=  new UUsers();


Finally you assign a value to your user object age and print it

 userList.uid[0].age = 24 ;
 writeln(userList.uid[0].age);
Apr 06 2018