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Revision 4955 Revision 4956
1 WeBWorK 1 WeBWorK
2 Program Generation Language 2 Program Generation Language
3 Version 2.3.1 3 Version 2.3.2
4 4
5 Copyright 2000-2006, The WeBWorK Project 5 Copyright 2000-2007, The WeBWorK Project
6 All rights reserved. 6 All rights reserved.
7 7
8Introduction 8Introduction
9 9
10 The [1]WeBWorKTeam is pleased to announce the release of PG 2.3.1. 10 The [2]WeBWorKTeam is pleased to announce the release of PG 2.3.2.
11 This release builds on PG 2.3.0, adding several bug fixes and 11 This version builds on PG 2.3.1, adding several bug fixes and
12 low-impact feature enhancements. Changes include: 12 low-impact feature enhancements. Changes include:
13 13
14 * Allow the _check subroutine in the BOP and UOP classes to affect 14 * [3]MathObjects: Use Perl reals rather than [4]MathObjects reals
15 the isConstant property. 15 for adaptive parameters in matrices.
16 * Allow matrices to set their own templates (instead of using "c" 16 * [5]MathObjects: Add a new operator // to be the same as / except
17 for all columns), and handle missing open and close delimiters 17 its TeX form is a/b rather than \frac{a}{b}. This makes it
18 better. 18 possible get horizontal fractions in exponents, for example, where
19 * Fixed unit checking so that units can include spaces (like 4 ft / 19 vertical fractions often don't look so good.
20 min). Also fixed a problem where units were not being reported as 20 * [6]MathObjects: Fix a problem with the TeX representation used in
21 part of the student's entered answer. 21 previewing students' answers. (Specifically, a + b would be
22 * Fix problem with formula comparisons involving vector-valued 22 represented as a\quadb. Now it is represented as a \quad b.)
23 formulas. The coordinates for the vectors used in checking 23 * [7]MathObjects: Fix a problem with the custom list checker.
24 equality were plain Perl reals rather than Parser-based reals, and 24 * [8]MathObjects: Added a Vector2D context that has i and j defined
25 so the comparisons were being done using exact rather than fuzzy 25 as vectors in 2-space so that they can be used to generate vectors
26 comparisons. 26 in 2D. This avoids students getting the "incorrect number of
27 * Make vector ijk mode use the TeX definitions from the i, j and k 27 coordinates" error.
28 constants as defined in the context, if they exist, otherwise fall 28 * [9]MathObjects: Modified the way the Parser-based versions of the
29 back on the defaults. 29 traditional answer checkers get copies of their contexts. They now
30 * Fixed problem where a zero with units would me marked as "not 30 use a new method getCopy to obtain the copy either from the
31 looking like a number with units". 31 problem's context table or the default table (rather than only
32 * Fixed bad check for if the complex number is 1, which caused the 32 from the default). That way the instructor can use
33 reduce function to incorrectly remove the complex number when used 33 parserCustomization.pl to customize the contexts used by the
34 in multiplication. 34 answer checkers.
35 * Improve error handling in the PGasu.pl macro package. 35 * [10]MathObjects: Clear the error message in Context before it is
36 * Fixed a problem with function checking when vars are specified 36 used in an answer checker (prevents bleeding of one error into a
37 with limits and the vars are not in alphabetical order. (The 37 later answer).
38 Parser expects the limits and test points to have coordinates
39 specified in alphabetical order, so they need to be reordered if
40 the author has them in another order.)
41 * Use \cdot when a number is followed by a numeric fraction. (See
42 bug_small.gif [2]Bug #1114.)
43 * Fixed a problem with checking Matrices of dimension 1 ╳ n.
44 (See bug_small.gif [3]Bug #1122.)
45 * Fixed a problem where str_cmp would not accept blank answers. (See
46 bug_small.gif [4]Bug #1123.) Note that the "n questions remain
47 unanswered" message will give away how many blank entries there
48 are supposed to be, so there is not really much point in using it.
49 * Fixed a problem where email could not be sent from PG problems.
50 * Allow overridden Parser classes to generate error messages that
51 the student will see. (For formulas, error messages are trapped
52 silently by the overridden == and will not be seen. This lets
53 Parser objects force a message to be seen.)
54 * Updated NumberWithUnits to use Parser::Legacy::NumberWithUnits
55 rather than having a separate implementation here. This will
56 guarantee that it is consistent with num_cmp() and prevents
57 unneeded duplication of code.
58 * Fixed a problem where the TeX version included two copies of the
59 units (one in TeX mode and one from the string() output).
60 * Security: Tighten constraints on which macro files can be loaded
61 without restriction. Previously, any macro file whose name
62 contained the strings dangerousMacros.pl, PG.pl, or IO.pl would be
63 loaded without restriction.
64 38
65Installation 39Installation
66 40
67 Refer to [5]InstallationManualV2pt3. This document covers installation 41 Refer to [11]InstallationManualV2pt3. This document covers
68 and upgrading of both WeBWorK and PG. 42 installation and upgrading of both WeBWorK and PG.
69 43
70Help 44Help
71 45
72 If you need help installing or using PG, visit the [6]WeBWorK 46 If you need help installing or using PG, visit the [12]WeBWorK
73 discussion group and post your question there. The developers and many 47 discussion group and post your question there. The developers and many
74 experienced WeBWorK users monitor this forum. 48 experienced WeBWorK users monitor this forum.
75 49
76Bug Reports & Feature Requests 50Bug Reports & Feature Requests
77 51
78 Please submit bug reports and feature requests at 52 Please submit bug reports and feature requests at
79 [7]http://bugs.webwork.rochester.edu/. 53 [13]http://bugs.webwork.rochester.edu/.
80 54
81 -- [8]SamHathaway - 03 Nov 2006 55 -- [14]SamHathaway - 15 Jan 2007
56 -- [15]SamHathaway - 05 May 2007 (updated for release)
82 57
83References 58References
84 59
60 1. http://devel.webwork.rochester.edu/twiki/bin/view/Webwork/WebRss?skin=rss&contenttype=text/xml
85 1. http://devel.webwork.rochester.edu/twiki/bin/view/Webwork/WeBWorKTeam 61 2. http://devel.webwork.rochester.edu/twiki/bin/view/Webwork/WeBWorKTeam
86 2. http://bugs.webwork.rochester.edu/show_bug.cgi?id=1114 62 3. http://devel.webwork.rochester.edu/twiki/bin/view/Webwork/MathObjects
87 3. http://bugs.webwork.rochester.edu/show_bug.cgi?id=1122 63 4. http://devel.webwork.rochester.edu/twiki/bin/view/Webwork/MathObjects
88 4. http://bugs.webwork.rochester.edu/show_bug.cgi?id=1123 64 5. http://devel.webwork.rochester.edu/twiki/bin/view/Webwork/MathObjects
65 6. http://devel.webwork.rochester.edu/twiki/bin/view/Webwork/MathObjects
66 7. http://devel.webwork.rochester.edu/twiki/bin/view/Webwork/MathObjects
67 8. http://devel.webwork.rochester.edu/twiki/bin/view/Webwork/MathObjects
68 9. http://devel.webwork.rochester.edu/twiki/bin/view/Webwork/MathObjects
69 10. http://devel.webwork.rochester.edu/twiki/bin/view/Webwork/MathObjects
89 5. http://devel.webwork.rochester.edu/twiki/bin/view/Webwork/InstallationManualV2pt3 70 11. http://devel.webwork.rochester.edu/twiki/bin/view/Webwork/InstallationManualV2pt3
90 6. http://webhost.math.rochester.edu/webworkdocs/discuss/ 71 12. http://webhost.math.rochester.edu/webworkdocs/discuss/
91 7. http://bugs.webwork.rochester.edu/ 72 13. http://bugs.webwork.rochester.edu/
92 8. http://devel.webwork.rochester.edu/twiki/bin/view/Main/SamHathaway 73 14. http://devel.webwork.rochester.edu/twiki/bin/view/Main/SamHathaway
74 15. http://devel.webwork.rochester.edu/twiki/bin/view/Main/SamHathaway
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