Racket Scheme: Basic example with Swindle

Question

I wanted to write a small prototype for something, and one of my first thoughts was, that a multimethod-based implementation would be really cool.

While I have used GOOPS in the past with guile, I thought I would give racket a try this time. And googling quickly showed that a tiny clos implementation "swindle" was available and distributed with racket:

http://docs.racket-lang.org/swindle/index.html?q=

After instaling racket, I could not load #lang swindle

#lang swindle

racket -f test.rkt

 % racket -f test.rkt 
standard-module-name-resolver: collection not found
  for module path: (submod swindle reader)
  collection: "swindle"
  in collection directories:
   /Users/holgerpeters/Library/Racket/6.1.1/collects
   /usr/local/Cellar/plt-racket/6.1.1/share/racket/collects
   /usr/local/Cellar/plt-racket/6.1.1/share/racket/pkgs/racket-lib

Alexis King Alexis King · Accepted Answer · 2015-03-09T20:45:53

You appear to be using the Homebrew plt-racket package, which is a distribution of Minimal Racket, which doesn't include all the packages by default.

The quick fix would be to install the swindle package yourself. Just use the raco command-line tool:

raco pkg install swindle

However, you might find having a full Racket installation helpful. The DrRacket IDE is fairly solid, and it isn't included in the minimal distribution.

The easiest way to install Racket is via the distributions available through Racket's website. Alternatively, if you want to install a non-minimal version of Racket on Mac OS X using a package manager, you can use the Homebrew extension, Cask. It provides a full version of Racket available through the following command:

brew cask install racket

Racket Scheme: Basic example with Swindle

1 Answers