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Feb
16
revised Patternmatching sets
deleted 115 characters in body
Feb
16
answered Patternmatching sets
Feb
16
comment Badly conditioned matrix (General::luc)
You can use LinearAlgebra`MatrixConditionNumber to find the condition number of your matrix. What value you choose as the threshold depends on your particular application... In general, a condition number that is $\mathcal{O}(10^n)$ can make you lose up to $n$ digits of accuracy (in addition to FP errors).
Feb
16
comment What Mathematica book to buy?
2 of the three you listed were already mentioned in other answers. Please make sure that suggestions are not being duplicated. As for the remaining one, please explain why you recommend it, as that is what will help future visitors make an informed decision.
Feb
16
revised Is there a convenient way to copy/paste text-interspersed SE code snippets into Mathematica?
deleted 3291 characters in body
Feb
16
comment Is there a convenient way to copy/paste text-interspersed SE code snippets into Mathematica?
For some reason, I wasn't pinged by this comment from you back in August. Anyway, the reason it failed for you is because this question was originally on meta (which is where I wrote this answer) and then it was migrated here. The suggested command pointed to the original, but since it was deleted, you couldn't retrieve it using the API (This was something I had mentioned in the post). In any case, my answer used v1.0 of the API, which was bound to fail at some point since they've deprecated it. I updated my answer today with a new version (using API v2.0), which is when I saw this comment.
Feb
16
revised Is there a convenient way to copy/paste text-interspersed SE code snippets into Mathematica?
update to use v2.0
Feb
15
comment Mathematica Minecraft
@Szabolcs Use my answer here :) (this is also built into the senotebook)
Feb
15
reviewed Approve suggested edit on Strange double evaluation using MorphologicalGraph
Feb
14
revised Implementation of Decompose
added 86 characters in body
Feb
14
comment Best way to modify values in a list of rules?
Probably not needed in this case, but I do it out of habit, when the RHS is a named pattern (or more generally, when it's not something of the form HeadA -> HeadB or SymbolA -> SymbolB)
Feb
14
comment Best way to modify values in a list of rules?
@Ajasja Explanation added :)
Feb
14
revised Best way to modify values in a list of rules?
added 377 characters in body
Feb
14
comment Get DownValues that do not involve patterns?
@Mr.Wizard I don't think it's a duplicate, because Simon's question was about clearing DVs with exactly $n$ arguments. It so happens that your code (with slight modification) would do this, but I don't think it would be obvious to a user who reads it thinking it's a dupe. Simon's (the Aussie one) question on SO though, is an almost dupe — if it had been on this site, I would've probably closed as a duplicate w/ a comment explaining the minor change needed. In any case, if this eventually gets closed, so be it :)
Feb
14
answered Get DownValues that do not involve patterns?
Feb
13
revised Integrating hat functions
deleted 68 characters in body
Feb
13
answered Best way to modify values in a list of rules?
Feb
13
reviewed Close Why is Mathematica limiting the execution time of my calculation?
Feb
13
revised Compare C++ Standard Library's Mersenne Twister with Mathematica's Mersenne Twister
added 88 characters in body
Feb
13
reviewed Approve suggested edit on Finding the likeliest path in a Markov process