The Racket repository
188f868a28
the purpose of drawing arrows. The computation to fill in the cache seems to actually be pretty quick and the work to clear the cache when it is out of date (via a call to on-change) can be substantial on big files, so just not maintaining the cache seems better. (there are 7254 arrows in drracket/private/unit.rkt, stored in an interval map, and iterating over the interval-map in a for loop seems to be time consuming) Also, DrRacket could get into a state where switching tabs would trigger a call to on-change, which means that switching tabs would take a few seconds. |
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| README | ||
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-mode 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) 2010-2011 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.txt for more information.