Re: Getting all struct members and values with introspection avoiding string mixins

[user1234 via Digitalmars-d-learn]

On Thursday, 5 October 2023 at 22:24:06 UTC, mw wrote:
On Thursday, 5 October 2023 at 21:41:38 UTC, cc wrote:

If you have `T info`, T.tupleof[n] will always match up with 
info.tupleof[n].  You can think of `info.tupleof[n]` as being 
rewritten by the compiler in-place as 
info.whateverFieldThatIs.  You might try this version (note 
the double {{ }} with static foreach):
```d
void printStructInfo( T )( T info ) {
        static foreach( i, A; info.tupleof ) {{
                enum attribName = T.tupleof[i].stringof;
                writefln( "%s : %s", attribName, info.tupleof[i] );
        }}
}
```

Be advised that T.tupleof and __traits(allMembers, T) return 
two different sets of things.  allMembers will probably get 
you a lot of stuff you don't want and will need to write 
checks to avoid.  Using .tupleof is a perfectly acceptable 
practice.


Thanks, this version does not include the alias.

Be aware however that `.tupleof[i]` create at compile time the 
tuple, just to read a single element, when finally just one is 
required.