Re: A few questions

[Namespace]

What's wrong with the solution that

void some_function(Foo? f) {
is converted to

void some_function(Foo f, string filename = __FILE__, uint line = 
__LINE__)  in {
    assert(f !is null, std.string.format("Null Object @ File %s 
on Line %d.", filename, line));
} body {

? It isn't a huge effort for the compiler, or?