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Robby Findler 29971bb642 fix a performance bug in drracket's REPL IO.
This one of those classic n^2-loop-that-should-be-linear bug. The fix
speeds up this program (when run in DrRacket) by about 1.75x:

  (for ([x (in-range 10000)])
    (display "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz\n"))

The bug is fairly old too: I introduced this bug on March 6th,
2004. (Thanks, Sam, for making that old history accessible!)

original commit: 95cdd6e6198ea08d0ad7546bb8c19d12b4e5a83f
2014-05-10 20:02:03 -05:00
pkgs fix a performance bug in drracket's REPL IO. 2014-05-10 20:02:03 -05:00