Sweet: an alternative to s-expressions
This manual describes the sweet planet package, which is a port of the sweet reader created by David Wheeler to Racket. In the port, you can use the sweet reader as its own separate language.
To use sweet expressions, supply a #lang line like the following:
#lang planet asumu/sweet racket printf("Hello")
The third parameter on the #lang line is the base language to be used with sweet expressions. You can supply any language here such as racket, typed/racket, or others.
For example:
#lang planet asumu/sweet typed/racket define: fact([n : Integer]) : Integer if zero?(n) 1 {n * fact{n - 1}}
Currently, the reader is limited because it does not read Racket extensions to Scheme syntax such as hash literals, but these limitations may be removed in future versions.