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User:Dspies: Difference between revisions
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'''C++'''<br /> | '''C++'''<br /> | ||
I've programmed somewhat on and off in C++, but I've never worked on a project with a group or intended for public consumption. A couple years ago I wrote a Quadratic Number Field Sieve using gmp and that was the first significant piece of code I wrote in C++. A couple months ago I wrote a preprocessor for grounded Answer Set Programs that does something analogous to forward-checking to infer binary constraints. During this project I read "Effective C++" and some of "C++ Templates: The Complete Guide". I did extensive online browsing to understand C++-11 rvalue references and perfect forwarding (although I realize Octave doesn't use C++-11 so those won't be available). I also posted a lot of questions on Stack Overflow.<br /> | I've programmed somewhat on and off in C++, but I've never worked on a project with a group or intended for public consumption. A couple years ago I wrote a Quadratic Number Field Sieve using gmp and that was the first significant piece of code I wrote in C++. A couple months ago I wrote a preprocessor for grounded Answer Set Programs that does something analogous to forward-checking to infer binary constraints. During this project I read "Effective C++" and some of "C++ Templates: The Complete Guide". I did extensive online browsing to understand C++-11 rvalue references and perfect forwarding (although I realize Octave doesn't use C++-11 so those won't be available). I also posted a lot of questions on Stack Overflow.<br /> | ||
Here's a recent C++ project of mine: | |||
https://sourceforge.net/projects/aspmutexpreprocessor/files/?source=navbar <br /> | |||
'''Octave m-scripts'''<br /> | '''Octave m-scripts'''<br /> | ||
I use Octave a lot for minor tasks that come up in research. It's a wonderful tool and I love coming up with sneaky ways to vectorize bits of code. Sometimes I go on StackOverflow to look for "how do you vectorize x" questions just so I can answer them. Most of them are for Matlab though. I don't know why Octave isn't a more popular alternative.<br /> | I use Octave a lot for minor tasks that come up in research. It's a wonderful tool and I love coming up with sneaky ways to vectorize bits of code. Sometimes I go on StackOverflow to look for "how do you vectorize x" questions just so I can answer them. Most of them are for Matlab though. I don't know why Octave isn't a more popular alternative.<br /> | ||
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This fails with an OOM because it wasn't considered when writing max <br /> | This fails with an OOM because it wasn't considered when writing max <br /> | ||
This sort of aggregate function (over the rows) can be done in O(min(h+nnz, nnz*log(w))) time, but one would have to implement the algorithm for each of the above-mentioned 7 functions. By consolidating these into one templated function, it'll make it worth the effort to implement.</p> | This sort of aggregate function (over the rows) can be done in O(min(h+nnz, nnz*log(w))) time, but one would have to implement the algorithm for each of the above-mentioned 7 functions. By consolidating these into one templated function, it'll make it worth the effort to implement.</p> | ||
* | * There has to be a standard way to take an octave_value argument and call the proper template instantiation of a function based on its type. I started doing this with https://savannah.gnu.org/patch/?8417 , but diagonoal matrices still need to be added. The fact that the original implementer of find neglected to handle diagonal matrices should be evidence enough that the ad-hoc approach doesn't work. | ||