c2 classes

[Ali]

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;