On Monday, 13 December 2021 at 13:02:50 UTC, Ola Fosheim Grøstad wrote:
On Monday, 13 December 2021 at 12:51:17 UTC, evilrat wrote:
That example is still looks very conspicuous because it is very likely does nothing on the caller side in C++ as it passes a copy.

Yes, I wouldn't want to use it, maybe manual mangling is better, but still painful. ```const A&``` is so common in C++ API's that it really should be supported out-of-the-box. All it takes is adding a deref-type-constructor to the D language spec, e.g. ```ref const(@deref(A))```

I fully agree. This pattern is so common in C++, that I am surprised D doesn't have a way to do this already. The whole idea of linking against C++ is to interop easily, with little friction and high performance. Needing to build any shims or redesign the C++ side is very much contrary to this goal.

Does anyone know whether such issues have been discussed before? I can't imagine I'm the first one to run into this.

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