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422 Commits

Author SHA1 Message Date
Guillaume Marceau
f858b8bb5c Htdp no longer throws exceptions that have no source information 2011-07-06 00:19:24 -04:00
Guillaume Marceau
79589b9b9f The htdp test suite now checks that the correct error messages are thrown. 2011-07-06 00:19:22 -04:00
Guillaume Marceau
2f3da4c4cd Changed the wording of BSL error messages 2011-07-05 17:57:19 -04:00
Eli Barzilay
3157955d40 ".ss" -> ".rkt" scan done. 2011-07-02 10:37:53 -04:00
Ryan Culpepper
1b702a2ae3 docs reorganization 
added tutorial, racket categories
  relabeled some other categories
  normalized manual names: de-bolded, changed some names
 2011-07-01 17:16:53 -06:00
Robby Findler
69b5daa9e6 remove docs tests that no one was interested in 2011-07-01 11:38:09 +08:00
John Clements
e367f1d0f2 added missing argument to parameter set 2011-06-29 14:35:47 -07:00
John Clements
d839b9fea6 renamed define-struct-hint to black-box-expr, applied to require as well 2011-06-29 00:28:08 -07:00
Eli Barzilay
40124a0619 A long overdue scan to eliminate files without terminating newlines. 
(DrRacket should really do that.)
 2011-06-28 02:01:41 -04:00
Eli Barzilay
ac26fe7554 A ton of @scheme*' -> @racket*' and related updates. 
Also, updates some of the mzlib files to point at `racket/*' libraries
rather than to `scheme/*' ones.
 2011-06-25 04:08:47 -04:00
Matthias Felleisen
e3c552b785 boolean-valued functions in Intermediate and up now check their results; also fixed some error messages; Closes PR 11745 2011-05-25 14:05:45 -04:00
Matthias Felleisen
84cb649b87 removed pair? from language primitives so that HTDP works; Closes PR 10148 2011-05-13 12:55:45 -04:00
Robby Findler
507b1cd8fd moved the docs-complete library into rackunit 
to avoid having a separate, new manual for the
  one library
 2011-05-05 16:10:42 -05:00
Matthew Flatt
4cd0ba277e remove `define-wish' from BSL for now 
Merge to 5.1.1
 2011-04-27 06:09:30 -06:00
Robby Findler
7701f75fb0 adjusted test-docs-complete.rkt tests 2011-04-25 19:00:01 -05:00
Robby Findler
e7d0029aea added lots of new tests that our documentation is complete 2011-04-25 13:24:43 -05:00
Sam Tobin-Hochstadt
f9bf318a90 Fix `ormap' error messages in HTDP languages. 2011-04-12 14:28:33 -04:00
Kathy Gray
7758f508c5 Addition of define-wish to the teaching languages and corresponding addition of support for wishes in test reports and check-expects 2011-02-21 12:46:39 +00:00
Robby Findler
87e637a1cc - adjust the teaching language test coverage style implementation 
so that it changes immediately when the black-on-white and
  white-on-black buttons are pushed in the preferences dialog

- expanded the color preferences api a little
  to allow the specification of background colors
  in addition to the foreground/style information
  already there

- changed the test coverage style so that the colors are
  settable in the preferences dialog

  closes PR 11704
 2011-02-17 12:27:00 -06:00
Robby Findler
7af41fddc3 We no longer need to avoid IO or worry about exceptions, so drop the with-handlers. 
Revert "This is a change to paper over a bug elsewhere in the system that threatens the release."

This reverts commit 25adab8cbb.
 2011-02-15 19:05:21 -06:00
Robby Findler
25adab8cbb This is a change to paper over a bug elsewhere in the system that threatens the release. 
Specifically, when there is an error in the namespace require (say if one of the teachpack
files gets corrupted (because you use a script that monkeys around in the installation, say,
and things go wrong)) then the first-opened method does not return normally, but raises
an exception. This, so far, is not a problem, but it appears that there is a bug in the
implementation of the drracket repl io ports that causes them to deadlock when flushing
the error port under certain conditions (I'm not sure what is really going on with this bug,
but I am observing a call to flush that fails to return) and the error-display-handler
for the teaching languages flushes the output port.

This change just avoids printing the error and so the error display handler is not called
in the fragile state. This change goes back to exactly what was happening in 5.0.2,
at least as far as the teaching language's first-opened method is concerned.

So, if this seems okay, I'd like to suggest it be included in the release.
 2011-02-14 10:36:09 -06:00
Matthew Flatt
655f6045a2 fix shared' for #:auto' fields and constructors without `make-' 
Closes PR 11588
 Closes PR 11591
 2011-01-05 13:52:11 -07:00
Robby Findler
6fe8643194 adjust teaching languages so that print works properly 2010-12-27 09:16:09 -06:00
Mike Sperber
d5c58d9f82 Extends =~ to complex numbers 
This is a (variation of a) fix from David van Horn.

Closes PR 11547.
 2010-12-26 09:03:10 +01:00
Robby Findler
9c12f7aaa5 fix dumb edito I did last week or so 2010-12-24 19:12:55 -06:00
Robby Findler
bf53fd5c38 adjust the auto-text behavior of DrRacket so that it doesn't require the 
queue-callback / execute callback dance; also, change the behavior
  a little bit so that it works a little bit more like the rest of the
  DrRacket languages; in particular, the initialization of the REPL
  now only happens when a window is first opened or a new tab is first
  created, but not at other times (ie not when the language changes;
  when the language changes, we just keep the REPL state the same and
  show a warning like before)

This change also required a change to the way the repl is initialized
and a slight change to the behavior of the first-opened method. Specifically,
it is now called in a slightly better context so that errors that
happen look like errors in the user's program. The only other use of
the first-opened method in the tree was to initialize the teachpacks
in the teaching languages and this new behavior is also an improvement
there.
 2010-12-20 08:43:34 -06:00
Mike Sperber
fa854f62fc Add vector signatures, and `vector-of' to the HtDP signature syntax. 2010-12-19 11:20:51 +01:00
Mike Sperber
6bee489091 Add menu item to disable signature checking. 2010-12-14 17:29:30 +01:00
Mike Sperber
dbd1cfaf10 Don't use teach-equal?' for one-of' signature. 
I did this under the mistaken assumption `equal?' would not work for
cycles, I think.
 2010-11-26 11:10:29 +01:00
Mike Sperber
99e66e0dea Fix cycle detection in `tequal?'. 
... and thus in `check-within', by using an eq? hash table.  Also,
while we're at it, add cycle detection to `tech-equal?'.

Fixes PR #11423.
 2010-11-17 17:15:31 +01:00
Mike Sperber
69b858a7f5 Unbreak printing in DMdA. 
Fix the the name by which the HtDP and DMdA languages refer to the
signatures module, making sure everybody sees the same properties.
 2010-11-10 07:32:52 +01:00
Vincent St-Amour
c7d67f9bab *SL: first and rest should not report errors in terms of car and cdr. 2010-11-09 21:16:17 -05:00
Robby Findler
22ce241d4d no #%plain-app because test is not a function... 2010-10-22 06:45:56 -05:00
Robby Findler
c34bd6c28d fix the metadata parsing to be more robust so drracket does not crash when opening a corrupt htdp teaching language file 
closes PR 11332
 2010-10-22 06:45:56 -05:00
Robby Findler
ae37e186e7 use #%plain-app to avoid possible problems with code injected into the teaching languages 2010-10-19 07:07:08 -05:00
Matthew Flatt
9f959f247e fix quotability annotation on HtDP-language structs 
Merge to 5.0.2
 2010-10-17 19:32:17 -07:00
Mike Sperber
39541c51b5 Add `tech-equal?'. 
This refuses to work on inexact numbers and procedures.  Use it in
`check-expect' & friends.
 2010-10-15 15:26:24 +02:00
Robby Findler
8032705cf9 The call to display-results depends on the value of the current-namespace 
parameter. Specifically, it is expected to be a namespace that has the GUI
bindings available. Unfortunately, during the dynamic extent of the
uncaught-exception-handler when a syntax error is raised, this may not be
the case because you get a phase 1 namespace, not a phase 0 one.

So, move the call to display-results to the code that runs the student language
programs and out of the uncaught exception handler.
 2010-10-13 15:55:16 -05:00
Robby Findler
2de8b978ba move read-accept-lang parameter setting to the right place 2010-10-13 15:55:16 -05:00
Matthias Felleisen
852aaed2ea removed signatures for now 2010-10-13 12:49:26 -04:00
Matthias Felleisen
df62ca47e9 added 'function', Closes PR 11283 2010-10-13 10:31:00 -04:00
Mike Sperber
f3191ff4d6 Define `any' signature differently. 
... to actually enable the subtyping check.  Also, make named
signatures work for signature variables.
 2010-10-13 09:41:10 +02:00
Mike Sperber
eebe5b2e2b 2nd attempt at generators for records/structs. 
This time, with feeling.
 2010-10-11 13:34:16 +02:00
Mike Sperber
f706b0d7a7 Revert "Create arbitraties off parametric struct/record signature constructors." 
This reverts commit 7df9a22a67.

It was broken in several ways.  New attempt later.
 2010-10-09 17:48:58 +02:00
Matthew Flatt
6ac33a62be set `read-accept-lang' to #t by default, plus related adjustments 
including adding some uses of `with-module-read-parameterization'
 so that `read-accept-lang' is set right anyway; still, so many
 many places just set `read-accept-reader' to #t that making
 `read-accept-lang' #f by default looks like too big of an
 incompatibility
 2010-10-08 19:01:33 -06:00
Mike Sperber
4ec7cb1d88 Unbreak coverage for *SL `define-struct'. 2010-10-08 19:56:51 +02:00
Mike Sperber
7df9a22a67 Create arbitraties off parametric struct/record signature constructors. 
This enables QuickCheck value generations for structs/records.
 2010-10-08 17:21:07 +02:00
Mike Sperber
219c91d8e7 Check parametric struct/record signatures eagerly. 2010-10-08 17:01:47 +02:00
Mike Sperber
9b1188c77a Re-instate Robby's hack to display test results off REPL errors. 
... and generalize it so there's an action before (clearing the old
tests out) in addition to after (displaying the test results).

Also, do for DMdA as for HtDP.
 2010-10-08 15:25:44 +02:00
Mike Sperber
3e205b6193 Better error message for certain bogus signatures. 2010-10-08 13:55:42 +02:00
Mike Sperber
7572b24870 Unbreak stepper. 
(It was broken by fed1e3dc3e2d7268c0297a0ce699d3deb2ba75c5.)
 2010-10-08 13:41:44 +02:00
Mike Sperber
38cf78e213 Allow specifying arbitary expressions in a signature declaration. 
Fixes PR 11282
 2010-10-08 13:12:18 +02:00
Mike Sperber
1e44fc8e43 More "contract" -> "signature" identifier renaming. 2010-10-08 11:51:33 +02:00
Mike Sperber
91590040dc Ignore duplicate signature declarations. 2010-10-08 11:50:17 +02:00
Mike Sperber
87da2f35b9 Provide English and German versions of deinprogramm/signature/signature. 2010-10-08 11:19:38 +02:00
Mike Sperber
b98b83b672 Make uncaught exceptions in teaching languages pop up test-engine display. 
... so as to catch any test-case failures or signature violations that
may have occurred.
 2010-10-08 10:25:37 +02:00
Mike Sperber
6997b08fa2 Remove front-end/interaction hack for test-engine. 
It's not needed anymore after Robby's fix to namespace handling in the
teaching languages.
 2010-10-08 09:28:07 +02:00
Robby Findler
fed1e3dc3e adjusted the way the teaching languages work so that signature 
violations in the REPL are tracked.
 2010-10-07 14:27:56 -05:00
Eli Barzilay
2189957b6f Change the errortrace protocol for `initialize-test-coverage-point' and 
`test-covered' to use just the expression -- looks like there's no
reason to use an additional key.

Also, change its uses to map each syntax to an mcons where its mcar is
used to track coverage.  This is done everywhere, since it turns out to
be much faster to insert a `set-mcar!' with a 3d mpair, rather than a
call to a thunk.

Note that it still uses mpairs as a hack.  It "works" in the same way
that this simplified example does:

  (define-syntax m
    (let ([b (mcons 0 0)])
      (lambda (stx)
        (with-syntax ([b b])
          #'(case-lambda [() (mcar b)]
                         [(x) (set-mcar! b x)])))))

I think that it's fragile, and likely to stop working at some point, but
I don't see anything better for now.
 2010-10-04 17:24:22 -04:00
Matthias Felleisen
725da3b2ed fix string-ith problem, Closes PR 11261 2010-09-28 18:07:10 -04:00
Robby Findler
feddcdaef9 closes PR 11241 2010-09-23 06:25:21 -05:00
Mike Sperber
65bd667be2 Make parametric signatures work in BSL. 2010-09-22 11:35:00 +02:00
Mike Sperber
7304c061e3 Add `cons-of' signature constructor to HtDP languages. 2010-09-22 11:31:24 +02:00
Mike Sperber
593f8588fe Implement lazy signature checking for ordinary pairs. 2010-09-22 11:03:01 +02:00
Mike Sperber
98c9ad4d22 Add `Any' contract to HtDP languages. 2010-09-21 16:23:58 +02:00
Mike Sperber
333d82e6df Fix some error messages for invalid : signature declarations. 2010-09-17 18:02:33 +02:00
Mike Sperber
8bc95ace01 Unbreak signatures for BSL. 2010-09-17 18:02:33 +02:00
Robby Findler
4bbb1f4cd9 Added a second column for the 2htdp teachpacks to the choose-a-teachpack dialog 
closes PR 11170
 2010-09-07 17:34:08 -05:00
Robby Findler
5e04a5c6d9 When opening a new window where the language is one of the htdp languages (via the 
language dialog, not the #lang htdp/* variants), teachpacks are put into the
initial REPL (instead of just having the language primitives).

closes PR 11160
 2010-09-04 19:37:02 -05:00
Matthew Flatt
036ed57000 fix *SL `define-struct' expand-time info: omit non-existent struct type 2010-08-30 16:11:08 -06:00
Robby Findler
b1550d6c9b changed the expansion of the ... macro in the teaching languages so that 
it cooperates with the test coverage annotations in drracket.
closes PR 11138
 2010-08-30 09:23:34 -05:00
Robby Findler
7020cb6e4c adjusted the language dialog so that the output-style and fraction-style radio boxes aren't adjacent 2010-08-29 08:20:53 -05:00
Eli Barzilay
8e0f8dd39c More "~n" -> "\n" changes 2010-08-26 12:11:00 -04:00
Jay McCarthy
45a8854398 Adding immutable hash operations to ASL 2010-08-25 10:36:36 -06:00
Jay McCarthy
368d711ae2 Optional arguments to hash table constructors in ASL 2010-08-25 10:36:34 -06:00
Matthew Flatt
0955ed6e8b fix custom printer attached to *SL structure types 2010-08-24 06:23:22 -06:00
Robby Findler
611e04abda adjusted the expansion so that the references to "foo" in this ISL program: 
(define-struct foo (x))

(: make-foo (Number -> foo))
(: foo-x (foo -> Number))

(define x (make-foo 5))
(foo-x x)

don't get colored the "not yet executed" color.
 2010-08-23 10:23:34 -05:00
Matthew Flatt
a7bc964c69 fix problem with binding of *SL struct-type name and application 2010-08-19 07:38:25 -06:00
Robby Findler
ee3a837ee2 fixes the other aspect of PR 11062 2010-07-31 09:15:11 -05:00
Matthew Flatt
0e8af6bc5d fix acc/mut error msgs from `define-struct' in teaching languages 
Merge to 5.0.1
 Closes PR 11062
 2010-07-30 11:16:32 -06:00
Jay McCarthy
407dcee206 Adding match to ASL 2010-07-22 15:39:53 -06:00
Jay McCarthy
eeada45868 Fixing error string 2010-07-22 15:12:07 -06:00
Jay McCarthy
9eb053d4db Adding define-datatype to ASL 2010-07-22 11:36:04 -06:00
Jay McCarthy
c9ccf6d48b Adding all hash prims per SK 2010-07-16 09:43:03 -06:00
Jay McCarthy
d17deb5fef Adding hash table functions to ASL 2010-07-15 15:45:54 -06:00
Mike Sperber
5cd0a37d5e Re-export struct:posn from lang/posn. 
I hadn't checked someone is using it.
 2010-06-28 15:00:32 +02:00
Mike Sperber
faf8ec358f Rename DMdA/HtDP "contract" to "signature". 2010-06-28 14:58:16 +02:00
Mike Sperber
3319fa41d0 Add properties to the HtDP teaching languages. 2010-06-09 14:16:34 +02:00
Mike Sperber
c7a7eb0a58 Export Symbol contract into HtDP teaching languages. 2010-06-09 13:57:17 +02:00
Mike Sperber
f29b6483f9 Export `posn' contract to the HtDP teaching languages. 2010-06-09 13:46:51 +02:00
Mike Sperber
744b45f470 Rename HtDP list' contract to list-of'. 2010-06-09 12:07:47 +02:00
Mike Sperber
5b4d25295d Make `define-struct' define contracts. 
In particular, in

(define-struct foo (a b))

... foo is a contract, and a contract combinator `foo-of' is defined.
 2010-06-09 11:07:22 +02:00
Mike Sperber
da88f22b0e Change do-define-struct' to use make-struct-type' explicitly. 
This is to enable the contracts work that is to come.
 2010-06-08 14:20:07 +02:00
Mike Sperber
97a04e9f9d Fix error message to match the test suite's check for it. 2010-06-08 11:22:35 +02:00
Mike Sperber
dee21e9e73 Add what's needed, delete what's in the way. 
Stuff I had forgotten earlier.
 2010-06-08 09:26:07 +02:00
Mike Sperber
b0e6e6b55d Merge remote branch 'origin/master' 2010-06-07 17:26:34 +02:00
Robby Findler
c96bbe640d makes image=? work on 2htdp/image images. 2010-05-26 20:55:24 -05:00
Mike Sperber
f899fdf15d Report the correct position for a blamed procedure. 
... if the `lambda' of that procedure was the result of expanding a `define':
Attach the `define''s source location to the `lambda' expression.
 2010-05-21 19:39:27 +02:00
Mike Sperber
8d39c15b17 Make contracts available in HtDP languages. 
Known breakage: when blame is assigned to a procedure defined via
(define (f ...) ...), its source position isn't reported because its
lambda expression is generated.
 2010-05-21 19:30:37 +02:00
Mike Sperber
8590e8cadf Merge deinprogramm contract test-engine into the regular one. 
This adds support for contracts.
 2010-05-20 15:31:45 +02:00
Matthew Flatt
9fc5cbfa2c Fix syntax error in ASL 
Closes PR 10914
 Merge to v5.0
 2010-05-19 15:11:41 -06:00
Eli Barzilay
de0cc7771b A lot of "DrScheme" -> "DrRacket"s. 2010-05-17 01:27:03 -04:00
Eli Barzilay
7f6efdc8be A lot of "MrEd" -> "GRacket"s. 2010-05-16 23:46:05 -04:00
Matthew Flatt
b26bf5e225 fix DrRacket printing styles and distinguish 'print' vs. 'write' 2010-05-08 10:18:50 -06:00
Matthew Flatt
eb15dceb34 rackety misc docs 2010-05-07 09:13:51 -06:00
Matthew Flatt
043f97df97 fix more test files 2010-05-01 07:23:05 -06:00
Robby Findler
f46ad89200 fixed a preference setting 2010-04-29 11:06:27 -05:00
Matthew Flatt
32de6647dc fix HtDP language printing 2010-04-28 08:55:16 -06:00
Matthew Flatt
28b4043077 rename all files .ss -> .rkt 2010-04-27 16:50:15 -06:00
Matthew Flatt
616080c7c4 change 'define-struct' to bind the type name as a constructor, add an #:extra-constructor-name option, etc. 2010-04-25 12:10:36 -06:00
Matthias Felleisen
6bc3484ae0 added member? as an alias for member to BSL 2010-04-20 22:48:41 -04:00
Matthew Flatt
0550cc3680 htdp language readers introduce explicit #%module-begin (for consistency with other #lang-based languages, as requested by JPR); merge to4.2.5 
svn: r18605
 2010-03-23 13:34:00 +00:00
Robby Findler
50a6a585b1 fixed some repl-printing related bugs that would make 'write' sensitive to pretty-print's parameters in drscheme's repl 
svn: r18321
 2010-02-24 17:35:09 +00:00
Robby Findler
6f4c164793 improved the implementation of error in the teaching languages, added test casees 
svn: r17923
 2010-02-01 15:39:33 +00:00
Matthew Flatt
1086cefc7a add empty to the list of things that are not structs for HtDP langs 
svn: r17563
 2010-01-08 13:38:48 +00:00
Matthew Flatt
1e2cb09f39 fix HtDP advanced docs for random 
svn: r17470
 2010-01-03 18:04:44 +00:00
Matthias Felleisen
560234138c error docs fixed 
svn: r17455
 2009-12-31 19:08:19 +00:00
Matthias Felleisen
7f2bce0130 added with-in/out from/to string for Bloch 
svn: r17453
 2009-12-31 14:50:47 +00:00
Matthias Felleisen
5296a0a877 added gensym, current-millisecond, sleep, assoc, with-i/o-from-to 
svn: r17444
 2009-12-30 22:45:12 +00:00
Matthias Felleisen
e9be5c92fe added (random) to ASL 
svn: r17438
 2009-12-30 15:26:28 +00:00
Robby Findler
e821a0c461 separated 2htdp/universe from htdp/image, allowing either htdp/image or 2htdp/image to be used 
svn: r17430
 2009-12-29 23:59:39 +00:00
Matthias Felleisen
bd0f694803 svn: r17109 2009-11-30 16:16:50 +00:00
Matthias Felleisen
2bb3403f88 modified error to take arbitrary number of arguments 
svn: r17108
 2009-11-30 15:31:38 +00:00
Eli Barzilay
09c8baf7e7 Re-enable context searches for the htdp languages, with results that 
come from the language or the teachpacks.

svn: r16945
 2009-11-21 22:05:28 +00:00
Matthias Felleisen
2153c258db fixed to docs of eq?, eqv?, memq, and memv 
svn: r16742
 2009-11-13 03:30:46 +00:00
Matthias Felleisen
26bf0a7297 added list* to advanced 
svn: r16492
 2009-10-31 16:13:57 +00:00
Matthew Flatt
f3de56f742 fix 'append' in ISL+ to disallow a non-list last argument (merge to 4.2.2) 
svn: r16166
 2009-09-29 15:28:44 +00:00
Matthias Felleisen
d39c717b69 fixed argmax doc bug; please propagate 
svn: r16118
 2009-09-23 22:27:13 +00:00
Matthias Felleisen
4ad2d25e1d error takes just a string 
svn: r16071
 2009-09-19 17:20:34 +00:00
Kathy Gray
e3c2721052 Adding check-member-of and check-range to the htdp languages and updating the docs. 
svn: r16064
 2009-09-18 12:37:18 +00:00
Mike Sperber
c26b3b8c6c Make the Stepper behavior on and/or configurable: 
In the HtDP languages, initial subexpressions that have evaluated to
#t / #f remain in the residual term, whereas in the DMdA languages,
they do not.

svn: r16018
 2009-09-15 17:32:21 +00:00
Matthias Felleisen
3c6f5e5c98 append takes 1 or more arguments now in ISL+ 
svn: r15779
 2009-08-18 20:01:31 +00:00
Matthias Felleisen
fd813e111e added make-pair to beginner 
svn: r15742
 2009-08-14 23:27:54 +00:00
Mike Sperber
28d27a5074 Make sure the test results are displayed, even when an exception 
occurs running the tests.

svn: r15724
 2009-08-13 06:42:40 +00:00
Matthew Flatt
3cb2775f7c preserve original id use in expansion of first-order->higher-order 
svn: r15699
 2009-08-11 01:58:03 +00:00
Matthias Felleisen
1fe887fd9a doc bug for replicate fixed 
svn: r15686
 2009-08-07 18:37:09 +00:00
Eli Barzilay
03f91ccbeb set svn:eol-style 
svn: r15561
 2009-07-25 10:06:55 +00:00
Matthias Felleisen
5e638cc8fe andmap, ormap (10326); remove added 
svn: r15555
 2009-07-24 22:06:24 +00:00
Matthew Flatt
68a2257f2a better interaction of HtDP languages with scheme/match 
svn: r15462
 2009-07-16 16:11:12 +00:00
Eli Barzilay
a70bf64fd9 Newlines at EOFs 
svn: r15380
 2009-07-04 02:28:31 +00:00
Matthew Flatt
81f9622b58 HtDP lang doc repairs 
svn: r15203
 2009-06-18 07:47:36 +00:00
Matthew Flatt
b09e905da0 fix intm+ function export to omit replaced beg math ops 
svn: r14841
 2009-05-16 02:20:13 +00:00
Matthias Felleisen
6a4c101859 arithmetic functions should be standard 
svn: r14831
 2009-05-15 16:30:39 +00:00
Matthias Felleisen
0e43e6a0dc added functins for analyzing strings as 1-letter strings 
svn: r14830
 2009-05-15 16:22:17 +00:00
Matthias Felleisen
299cba5adf svn: r14823 2009-05-14 22:50:43 +00:00
Matthias Felleisen
bac292acc6 second draft of char/string 
svn: r14755
 2009-05-08 21:55:05 +00:00
Matthias Felleisen
4d3d16ef48 char replacement functions, first draft 
svn: r14741
 2009-05-07 21:41:44 +00:00
Matthias Felleisen
5f2a62f37c svn: r14689 2009-05-02 15:25:15 +00:00
Matthew Flatt
b07a536ae3 bind λ in HtDP Intermediate+Lambda and Advanced (patch from Todd O'Bryan) 
svn: r14539
 2009-04-17 11:18:30 +00:00
Matthias Felleisen
05ae98e55b fixed error message for sqr 
svn: r14515
 2009-04-14 22:04:52 +00:00