On Wednesday, 14 November 2018 at 18:05:55 UTC, Adam D. Ruppe
wrote:
On Wednesday, 14 November 2018 at 16:28:19 UTC, Radu wrote:
Looks like that there is no easy way to extract a function
parameters UDA list.
Indeed, the only way I can find is kinda crazy:
---
void foo(int f, @("test") string s) {}
void main() {
static if(is(typeof(foo) Params == __parameters))
pragma(msg, __traits(getAttributes,
Params[1..2])); // get the second param
}
---
So, the process is:
1) alias the params with the static if + is() statement (this
is what std.traits.Parameters does internally)
2) slice the params! using params[0] will not work, but
params[0 .. 1] will.
3) get the attributes using the language function
Yes, that does the trick, thanks!
