The point of const, scope, and other attributes

[Walter Bright]

The C++ checker did gripe about some of the debug printf format strings not 
quite matching the arguments, such as printing a pointer with %x. The errors 
were benign, though. printf format mismatch was another situation where I wrote 
lots of bugs.

But that experience helped push me towards getting D to do printf format 
checking. The checking doesn't find bugs anymore in existing code, because those 
errors never make it through a compilation. It also trained me to not make those 
mistakes anymore.

So is that useful? Hell yes. I don't even have to bother checking the formats 
anymore when reviewing code. Neither need anyone else. Ain't that the shiznit? 
Why didn't we do that eons ago? Sigh.