John Abbott's activity
From 17 Oct 2021 to 15 Nov 2021
15 Nov 2021
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20:06 CoCoALib Slug #1394: Oddly slow GBasis computation (slow final cleanup)
- Here is another example using lex:...
12 Nov 2021
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- We should update the doc so that it encourages people to apply RINGHOM directly rather than using @apply@.
We should... -
- The global @packageDir@ should probably also be of type @boost::filesystem::path@.
Currently it is @std::string@ a... -
- It seems that @filesystem::path@ was introduced in C++17.
Anna asks whether we should start compiling with standard ... -
- In some files we use @std::string@ to represent paths to files.
Replace these with values of type @filesystem::path@... -
- Which type of answer do we prefer? LIST or MAT?
If we prefer MAT, are the eigenvectors the rows or the columns? ... -
- Here is a list of things to attend to when updating to C++17
* currently Scott Meyers does not have a C++17 book, so... -
- This issue is for gathering notes about updating to C++17 (from C++14).
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- Check if this is still a problem!
What does Robbiano do?
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- I have just tested what happens if there is some unsent input in the CoCoA-5, and it seems to discard the unsent inpu...
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- Might it make sense to bind also @C-c h@ and perhaps @C-c ?@ or even @C-c C-?@
Just some suggestions.... maybe t... -
- Website seems ok now.
Closing.
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- We need to decide what the restrictive message should say.
Ideally it should be just 1 or 2 lines long, and placed v... -
- We need to consider also the copyright notices in the sources for CoCoA-5.
Should the copyright notice for CoCoA-5 f... -
- Anna is reasonably convinced by the idea. She made some alternative proposals:
* use all capital letters for names ...
10 Nov 2021
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- Bruns reported by email that CoCoALib does not compile on an @"msys"@ platform because @sigaction@ is absent.
Inve... -
- Is there documentation now?
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- I have updated the documentation to the current behaviour.
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- I have decided to "test" the idea of putting a single underscore at the start of names.
I have just modified @bug-... -
- I made the change about a year ago (according to redmine), and no complaints have surfaced.
So advancing to *feedbac... -
- No real chance of finding time to resolve this in the foreseeable future :-(
Probably not that hard, but it will sur... -
- Anna: can you close this issue?
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- We probably need to change the fn @CoCoAManFileName@ (around line 950 in @OnlineHelp.C@).
The return type should be ... -
- There is a stackoverflow thread about getting @dirname@: https://stackoverflow.com/questions/3071665/getting-a-direct...
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- It would be nice (& cleaner) if we could get rid of @packages/../@.
I think this should be possible.
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- I have modified the error message slightly. Now it gives:...
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- My current opinion is to return the exit code, even if this is not well defined (in a portable way).
This would allo... -
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08 Nov 2021
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- I have reviewed the header files and checked them in.
We need to review also the copyright notices: I have added A... -
- Bernhard Andraschko reports the following (via email):...
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- Get started!
05 Nov 2021
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- I have changed all the files.
The only slightly strange one is @C5.H@ where the whole file is inside a @#ifdef@ bloc... -
- This is a reasonable proposal. Let's do it!
Soon?
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- Since we cannot see how to do this in a reasonable way, we reject the issue.
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- I have commented out the version in @coclib.cpkg5@. All tests pass.
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- What is the status of this issue? It is resolved?
Is %done correct? -
- Anna will try do this; perhaps this is a helpful prototype for issue #1103.
A very simple approach here would be t... -
- I tried changing @CoCoA_ASSERT@ so that it expanded to @(void)sizeof(cond)@, *BUT* this worked badly because some ass...
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- Agreed: the proposal in comment 5 is accepted.
To clarify the order of the elements in the canonical basis should ... -
- Anna will do this!
Soon... I hope! -
- Anna approves too.
Suggestion: create also a fn which returns a machine @long@ (if poss, o/w error).
04 Nov 2021
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- Is this something easy we could do quickly? Or is it better to postpone to the next release?
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- I have just tried, and CoCoA-5 no longer crashes. It also produced a fairly reasonable error message.
Maybe the err... -
- If @CoCoAHelp.xml@ is missing then the installation is broken (or there is a wrong path).
Crashing/aborting may be a... -
- This is still a problem, but not so common.
We should identify some cases where it occurs, and study those:... -
- The idea itself is not so bad, but actually implementing looks to be nightmarish.
I am inclined to reject this iss... -
- Now that I must consider how ringhoms are printed, I do think that readability of the current format is not so good.
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- Is the value "assigned" to @It@ or swapped into @It@ (hopefully without being copied more than strictly necessary)?
03 Nov 2021
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- I have added a "first" version of doc for @IdealOfPoints@ and @IdealOfProjectivePoints@.
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- The doc for @assert@ had already been added. I have revised the source code in @assert.H@ slightly.
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- I have just added doc for *@exception@* to the indexes.
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- We should see who uses the flag @IHaveGBasis@.
Presumably it could be replaced by a function which returns true if t... -
- If we want a special fn for getting the standard/canonical basis for a free module then it could be called *@Canonica...
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- What is the status of this issue?
Have it been resolved? Is there documentation? It would be good to close it, if ... -
- I have just implemented the KISS approach: namely 2 @#ifdef@ blocks. Everything compiles, & all tests pass (both wit...
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- The KISS solution would be to use the @CoCoA_DEBUG@ macro.
I'm not keen to use macros (esp. to make @#ifdef@ blocks ... -
- @clang@ is probably correct to report that the data-members are unused.
Their presence makes objects of this class n... -
- Anna reports that clang issues warning about unused data-members (in @MatrixFpNonRed@).
The data-members are used wh... -
- We have made some inprovements.
Clang's errors/warnings are often quite helpful (but sometimes also annoying).
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- I have tried to improve the structure of the code. What is printed out is tedious to follow -- can we make that prin...
30 Oct 2021
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- Here is a way of making test cases for computing determinant:
take a unimodular matrix, and multiply it by a nzzd (w... -
- Bernhard and I made several tests yesterday: well, he made the tests, I just came up with "clever"(??) ideas.
*SUM... -
- I have checked in (and found several errors/inconsistencies while doing so).
All compiles and works fine on my Linux... -
- I have checked in my changes. All compiles fine on my Linux box.
29 Oct 2021
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- I have done the first wave (too much train travel).
Very mind-numbing doing these almost mechanical changes.
My cop... -
- Following advice from Scott Meyers (Eff Modern C++, item 11)
use the keyword *@delete@* to indicate deleted function... -
- What are the differences between *@NewMat@* and *@ZeroMat@*.
The manual entry for @NewMat@ suggests that it is almos... -
- Here are some more examples which should work, but which do not:...
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- Now we have moved to C++14, and @BigInt@ has a move ctor, we can implement this change.
Should there be a speed ch...
27 Oct 2021
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- A possible compromise to avoid deleting the documentation if the software components needed to rebuild it are not pre...
25 Oct 2021
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- In @FractionField.C@ I have found this check-in comment:...
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- I think I have made most of the changes... quite a mind-numbing experience :-(
I may have found a couple of typos ... -
- Scott Meyers, in Effective Modern C++, writes in Item 12 that one should use the new C++ keyword *@override@* for mem...
21 Oct 2021
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- My CoCoA-5 ended abruptly when I sent an EOF as an input: is that to be expected?...
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- It seems to work fine on my linux box.
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- Long tried @PlayCantStop@ (On Microsoft) but quickly wanted to give up.
However, interrupting did not work. He had ...
20 Oct 2021
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- Maybe poor Anna will have to do a merge?
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- This is almost done. I made the change while making a belated, corrected video for last week's CoCoALib course.
Wil... -
- I have checked in the version which rejects constant but accepts polyrings with 1 indet.
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- I tried throwing an exception if the arg was a constant or if the polyring had just 1 indet, but several tests failed...
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- If we do change the semantics, *don't forget to change the doc as well!* And perhaps also change the tests!
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- I have just modified the imple of @UnivariateIndetIndex@ so that it produces an error if the input is constant or if ...
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- Robbiano would like @factor@ to work for integers (or some integers, at least).
How can we do this reasonably? Mayb...
18 Oct 2021
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- I suppose we could change the printed form to something like this:...
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- I have now found examples where the EmacsUI can change colours annoyingly: printing out homomorphisms....
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- Here is an example of what I mean:...
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- I have set the target version as 5.3.4, but this may be wildly optimistic.
I fear that this request may be rather ha... -
- I have noticed that error messages produced by fns which are defined in *@BuiltinOneLiners@* are less precise than th...
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- I have set 5.3.4 as the target version because I think it would be a good idea to have a first version available soon...
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- We need to produce documentation explaining the difference between the various *@BuiltIn@* files.
When someone wants... -
- Compare also with *@LinKer@* which returns MAT and *@LinKerBasis@*, returning LIST LIST RINGELEM.
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- The problem as describe is still present.
The easy approach is to leave the interpreter as is, and just change the...
17 Oct 2021
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- I have just checked in a modified version of cocoa5.el.
I have replaced line 1337 by an *@if@* which sets the major ...
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