Racket

Hi 👋

We are using this issue to focus on documentation! Documentation is essential for new learners and experienced programmers alike. It helps make our community inclusive by extending a friendly hand to those that are less familiar with Racket. It also helps us find the bugs and issues with the code itself, because we test and try things out as we document.

There are several ways to contri

What version of Racket are you using?

Racket 8.2.0.8

What program did you run?

(: hi (All (r #:row)
           (-> r r)))
(define (hi a)
  a)

What should have happened?

The type checker should reject the program, because a type variable for a polymorphic row type is in fact only allowed to appear in (Class #:row-var _) in Typed Racket.

If you got an erro

saving a text only file with "collapsed s-expr's" saves as wxme gracket format

this was an issue for a new user
https://groups.google.com/d/msg/racket-users/AWNG19cyD7M/sZVo8VvNEAAJ

A possible solution could be optionally un-collapsing s-exprs before save.

In racket/drracket#291 and racket/drracket#172, it was decided that "signature box" is a much better term than "blue box", and various parts of drracket's documentation were updated to use this phrase. Scribble's scribble/blueboxes library uses the term "blue box" in its documentation and the names of its exported identifiers.

We should