Metaprogramming in D : Some Real-world Examples

[Christopher Wright]

grauzone wrote:
> You're not testing for types, you're testing if it compiles. Inside the 
> tested block of code, all sorts of things could go wrong. You can't know 
> if is(typeof(...)) really did what you wanted, or if something broke.

So it requires caution, and you want to keep the contents small. It's 
useful, but it requires caution.