On Sunday, 12 June 2022 at 18:45:27 UTC, Paul Backus wrote:
On Thursday, 9 June 2022 at 21:20:27 UTC, JG wrote:
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Here's a `gensym` implementation I came up with a while back:
```d
enum gensym = q{"_gensym" ~ __traits(identifier,
{})["__lambda".length .. $]};
// Works multiple times on the same line
pragma(msg, mixin(gensym)); pragma(msg, mixin(gensym));
```
This takes advantage of the fact that the compiler generates a
unique identifier for every lambda function it encounters.
While you can't actually use those identifiers in your code,
they are visible in error messages and can be accessed via
`__traits(identifier)`.
Hi,
This is great thanks.
