On Friday, 3 February 2023 at 13:57:02 UTC, Steven Schveighoffer wrote: > On 2/3/23 7:43 AM, Nick Treleaven wrote: > >> if (__traits(callable, a, int())) > > GMTA? > > https://forum.dlang.org/post/rj5hok$c6q$1@digitalmars.com Thanks, yes I probably remembered it from things read here in the past.