The Racket repository
bb798b4ba5
The contract system now keeps track of three points of blame: the positive blame, assigned to the provider of a contracted value; the negative blame, assigned to the receiver of a contracted value; and the user "blame", assigned to the party that actually misuses the value. While the latter is not really blame, as blame is not assigned to that party when that party is not either the negative or positive party, it's useful information for programmers when debugging. For provide/contract, the negative party should be the first module to require an identifier provided via provide/contract. What was previously the negative party is really the user, and is now handled as such. |
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The Racket programming language =============================== Important executables: * DrRacket: Racket's integrated development environment (start here!). * Racket: the main command-line entry point for running racket programs and scripts. * GRacket: the GUI-enabled Racket executable. * raco: Racket's command-line toolset. More Information ---------------- Racket comes with extensive documentation: use DrRacket's `Help' menu, or run `raco docs'. Also, visit us at http://racket-lang.org/ for more Racket resources. Instructions for building Racket from source are in src/README. License ------- Racket Copyright (c) 2010 PLT Scheme Inc. Racket is distributed under the GNU Lesser General Public License (LGPL). This means that you can link Racket into proprietary applications, provided you follow the rules stated in the LGPL. You can also modify Racket; if you distribute a modified version, you must distribute it under the terms of the LGPL, which in particular means that you must release the source code for the modified software. See doc/release-notes/COPYING.LIB for more information.