On Tuesday, 9 September 2025 at 01:08:41 UTC, Brother Bill wrote:
On Tuesday, 9 September 2025 at 00:45:00 UTC, monkyyy wrote:
On Tuesday, 9 September 2025 at 00:40:31 UTC, Brother Bill
wrote:
https://tour.dlang.org/tour/en/gems/opdispatch-opapply
This states: "Any unknown member function call to that type
is passed to opDispatch, passing the unknown member
function's name as a string template parameter."
[...]
you didnt define "callhome" so the the mixin fails, this
propagates a "__error" or something, and opDispatch when it
contains an error doesnt pass it up the stack
Then I'm not clear what an "unknown" member function name means.
Kindly provide an example.
```d
import std;
struct Vector(int N,T,string fields){
static foreach(I;0..N){
mixin("T "~fields[I]~";");
}
auto opDispatch(string __s__)(){//I suggest a habit of avoiding
simple names when generating mixin code
return mixin((){
string output="tuple(";
foreach(C;__s__){
output~=C;
output~=',';
}
output~=")";
return output;
}());
}
}
unittest{
Vector!(3,int,"xyz") foo;
foo.x=5;
foo.y=3;
foo.yx.writeln;
Vector!(4,ubyte,"rgba") bar;
bar.bgr.writeln;
}
```
