5.3.2
21 Open place expressions
This library is unstable; compatibility will not be maintained. See Unstable: May Change Without Warning for more information.
| (require unstable/open-place) |
The subsequent bindings were added by Sam Tobin-Hochstadt <samth@racket-lang.org>.
syntax
(open-place id body ...+)
Like (place id body ...), but body ... may have free lexical
variables, which are automatically sent to the newly-created place.
Note that these variables must have values accepted by
place-message-allowed?, otherwise an exn:fail:contract exception is raised.