On Sunday, 14 July 2019 at 00:22:10 UTC, Ethan wrote: > https://run.dlang.io/is/l5Vyn4 > > Using an is statement inside a template constraint doesn't > propagate the is results in to a function. You have to static > if with the same is statement to make it work. https://run.dlang.io/is/rR5UCA And now with the full example. Derp.