How about assert?

[BCS]

downs wrote:
> Note that if we had trailing delegate syntax, combined with a break/continue convention like we currently have with opApply, as well as return forwarding, foreach wouldn't be necessary and could be moved to a library function :)
> 
> The result would look something like: foreach([2, 3, 4, 5]) (int x) { writefln(x); }
> 
> Probably too big a change though, sadly.
> 
> Also, let's really move assert into an object.d function. There's _no_ reason this should be a keyword.
> 
>  --downs

assert is removed completely on release. as a function that won't happen.