Best practices

[JS]

There seems to be a lot of stuff D can do but no best practices 
for optimal code(performance or safety).

Someone should write a book about it!
e.g., The scope(this) thread... is that something I should start 
doing because it is much safer or what? A book with all the 
goodies inside it would make life easier and get people off on 
the right foot instead of having to learn the hard way(it's bad 
enough with all the weird bugs in D already).