This function evaluates the given Macaulay2 code within the same process in order to speed up tasks such as generating example results or checking the package tests.
i1 : (err, output) = capture examples(resolution, Ideal)
o1 = (false, )
i1 : R = ZZ[a..d]
o1 = R
o1 : PolynomialRing
i2 : I = ideal(a,b,c,d)
o2 = ideal (a, b, c, d)
o2 : Ideal of R
i3 : C = res I
1 4 6 4 1
o3 = R <-- R <-- R <-- R <-- R <-- 0
0 1 2 3 4 5
o3 : ChainComplex
i4 : C_2
6
o4 = R
o4 : R-module, free, degrees {6:2}
i5 : C.dd_2
o5 = {1} | -b 0 -c 0 0 -d |
{1} | a -c 0 0 -d 0 |
{1} | 0 b a -d 0 0 |
{1} | 0 0 0 c b a |
4 6
o5 : Matrix R <--- R
i6 :
o1 : Sequence
|
i2 : assert not err |
If UserMode => false given, the dictionaries available to the user will not be affected by the evaluation and collectGarbage is called afterwards.
Errors occured while evaluating str do not cause an error outside of capture.
i3 : (err, output) = capture /// stderr << "Checking a false statement:" << endl; 1/0 ///
o3 = (true, )
i1 : stderr << "Checking a false statement:" << endl; 1/0
Checking a false statement:
currentString:1:52:(3):[3]: error: division by zero
o3 : Sequence
|
i4 : assert err |
Certain examples or tests might not be compatible with capture. In such cases, use the string -* no-capture-flag *- somewhere within str so that the code is run in a separate Macaulay2 subprocess instead.
The object capture is a method function with options.