Fred Emmott

It's not secret, we've just not had time to write proper documentation. I'll see if I can volunteer someone. Short version: - the typechecker can understand sprintf-like functions - FormatString...

Re-opening, do want the impelmentation/definition aspects documented somewhere

The example is correct; an fbonly section should perhaps be added here, as there is Facebook-specific behavior that’s relevant

The name 'hack arrays' itself seems like a PHPism when it includes 'dict' - unfortunately 'collections' is already taken :(

perhaps we should rename the page to "Containers"?

At least the “Container” type is a super type of the others :p

> Seems reasonable, that page is way too long anyway so probably worth splitting. This is increasingly seeming like the right approach to me - perhaps: - separate pages for...

refs facebook/xhp-lib#161

> the-file.php.hhvm.expect // usually empty This is, in general, an antipattern - but a common one. Agreed on the rest. `no.auto.output` is not required, but is usually desired, but that...

FYI changes to this set will require both changes to the 'fast' runner embedded here, and to hphp/test/run.php