I can't help putting this comment in the context of "Top Ten Reasons to Not Share Your Code" by Randall J Leveque (http://faculty.washington.edu/rjl/icerm2012/i

I can't help putting this comment in the context of "Top Ten Reasons to Not Share Your Code" by Randall J Leveque (http://faculty.washington.edu/rjl/icerm2012/icerm_reproducibility_leveque.pdf http://faculty.washington.edu/rjl/icerm2012/icerm_reproducib...). "The gist of the article is to urge readers to reconsider current attitudes about sharing code related to publications by pondering an “alternative universe” in which mathematics papers are not expected to contain the proofs of theorems. Many of the objections I hear repeatedly to sharing code can be applied to such a universe.[...] 4. Giving the proof to my competitors would be unfair to me. It took years to prove this theorem, and the same idea can be used to prove other theorems. I should be able to publish at least 5 more papers before sharing the proof. If I share it now my competitors can use the ideas in it without having to do any work, and perhaps without even giving me credit since they won’t have to reveal their proof technique in their papers."