• DLearner (17/17) Nov 28 2023 Trying to manipulate 'typeof' return strings, preferably at
• Adam D Ruppe (4/9) Nov 28 2023 I think what you really want is
• DLearner (2/12) Nov 28 2023 Thanks - worked.

DLearner <bmqazwsx123 gmail.com> writes:

Trying to manipulate 'typeof' return strings, preferably at 
compile-time.

e.g. to produce struct B below (intended to have an A 
sub-struct), from A_Ptr alone.
```
struct A {
    int AFld1;
}
A* A_Ptr;

struct B {
    int BFld2;
    typeof(A_Ptr)[0..($-1)] ASUB; // Idea is ASUB of type A, from 
A_Ptr of type A*.
}
```
But this fails with 'can only slice tuple types...'.

Suggestions?

Adam D Ruppe <destructionator gmail.com> writes:

On Tuesday, 28 November 2023 at 18:41:49 UTC, DLearner wrote:
 A* A_Ptr;

 struct B {
    int BFld2;
    typeof(A_Ptr)[0..($-1)] ASUB; // Idea is ASUB of type A, 
 from A_Ptr of type A*.


I think what you really want is

typeof(*A_Ptr) ASUB;


the typeof thing returns the type you'd get from the code inside

DLearner <bmqazwsx123 gmail.com> writes:

On Tuesday, 28 November 2023 at 18:43:37 UTC, Adam D Ruppe wrote:
 On Tuesday, 28 November 2023 at 18:41:49 UTC, DLearner wrote:
 A* A_Ptr;

 struct B {
    int BFld2;
    typeof(A_Ptr)[0..($-1)] ASUB; // Idea is ASUB of type A, 
 from A_Ptr of type A*.


 I think what you really want is

 typeof(*A_Ptr) ASUB;


 the typeof thing returns the type you'd get from the code inside

Thanks - worked.