[MichaelGG]

Traditionally, structs paid a large codegen penalty, as a lot of optimizations and stuff were turned off. It also seemed like the codegen wasn't super smart about passing them around. Maybe that's all changed.

I meant the verbosity of having to create a custom type for each kind of restriction, versus some inline "int n [n > 5]" notation.

[noblethrasher]

In addition to the benefit of brevity, something like your proposal also has the virtue of being compatible with the `checked/unchecked` keywords.