| … | |
… | |
| 2 | |
2 | |
| 3 | sub _contextIntegerFunctions_init {}; # don't reload this file |
3 | sub _contextIntegerFunctions_init {}; # don't reload this file |
| 4 | |
4 | |
| 5 | =head3 Context("IntegerFunctions") |
5 | =head3 Context("IntegerFunctions") |
| 6 | |
6 | |
| 7 | ###################################################################### |
7 | ###################################################################### |
| 8 | # |
8 | # |
| 9 | # This is a Parser context that adds integer related functions C(n,r) |
9 | # This is a Parser context that adds integer related functions C(n,r) |
| 10 | # and P(n,r). They can be used by the problem author and also by |
10 | # and P(n,r). They can be used by the problem author and also by |
| 11 | # students if the answer checking is done by Parser. The latter is |
11 | # students if the answer checking is done by Parser. The latter is |
| 12 | # the main purpose of this file. |
12 | # the main purpose of this file. |
| 13 | # |
13 | # |
| 14 | # Note: by default, webwork problems do not permit students to use |
14 | # Note: by default, webwork problems do not permit students to use |
| 15 | # C(n,r) and P(n,r) functions. Problems which do permit this |
15 | # C(n,r) and P(n,r) functions. Problems which do permit this |
| 16 | # should alert the student in their text. |
16 | # should alert the student in their text. |
| 17 | # |
17 | # |
| 18 | # Usage examples: |
18 | # Usage examples: |
| 19 | # $b = random(2, 5); $a = $b+random(0, 5); |
19 | # $b = random(2, 5); $a = $b+random(0, 5); |
| 20 | # $c = C($a, $b); |
20 | # $c = C($a, $b); |
| 21 | # ANS(Compute("P($a, $b)")->cmp); |
21 | # ANS(Compute("P($a, $b)")->cmp); |
| 22 | # |
22 | # |
| 23 | # Note: If the context is set to something else, such as Numeric, it |
23 | # Note: If the context is set to something else, such as Numeric, it |
| 24 | # can be set back with Context("IntegerFunctions"). |
24 | # can be set back with Context("IntegerFunctions"). |
| 25 | |
25 | |
| 26 | =cut |
26 | =cut |
| 27 | |
27 | |
| 28 | $context{IntegerFunctions} = Parser::Context->getCopy("Numeric"); |
28 | $context{IntegerFunctions} = Parser::Context->getCopy("Numeric"); |
| 29 | |
29 | |
| … | |
… | |
| 52 | P => {class => 'IntegerFunction2'}, |
52 | P => {class => 'IntegerFunction2'}, |
| 53 | ); |
53 | ); |
| 54 | |
54 | |
| 55 | Context("IntegerFunctions"); |
55 | Context("IntegerFunctions"); |
| 56 | |
56 | |
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|
57 | 1; |
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