▼ |  | Unstable: May Change Without Warning

1 | Guidelines for Developing unstable Libraries
2 | Automata: Compiling State Machines
3 | Bytes
4 | Contracts
5 | Contracts for Macro Subexpressions
6 | Debugging
7 | Definitions
8 | Errors
9 | Filesystem
10 | Find
11 | Flonums
12 | Futures
13 | Functions
14 | Hash Tables
15 | Interface-Oriented Programming for Classes
16 | Lazy Require
17 | Lists
18 | Logging
19 | Macro Testing
20 | Mark Parameters
21 | Match
22 | Open place expressions
23 | Options
24 | Parameter Groups
25 | Pretty-Printing
26 | Re-Contracting Identifiers
27 | Sandbox
28 | Sequences
29 | Strings
30 | Structs
31 | Struct Printing
32 | Syntax
33 | Temporal Contracts: Explicit Contract Monitors
34 | Unix Domain Sockets
35 | 2D Syntax
36 | GUI Libraries

On this page:

open-place

5.3.6
top ← prev up next →

### 22`` 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.
top ← prev up next →