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(also known as Spartacus)


See those two pins? Well today I'm going to... stick them in you.


Ok, let me come clean: Mr.Wizard is actually an alias of mine... I'm glad I can finally confess. ― Sjoerd C. de Vries

No, I'm Spatac... I mean, Mr.Wizard! ― R.M

I'm Mr.W, and so's my wife! ― acl


@Spartacus, it was not fixable. ― rcollyer

check again; I just fixed it. :-p ― Spartacus


"This is the internet, where the men are men, the women are men and the children are FBI agents..." ― yoda Dec 18 '11 at 6:06


"My main purpose of being here is in collecting the votes. I'd even go further and say that this is my main purpose in life." ― Leonid Shifrin


"I am making some voodoo dance and invoking the rain God while we talk" ― belisarius


Some people are fortunate. Others get married. ― belisarius


It's not that easy to do the untangling even manually though. – Szabolcs

Maybe you could turn it into a puzzle and let other people do the untangling :-) – Heike

I could make a web based game, and feed all my graphs to the visitors.
SE is a big game, isn't it? :D – Szabolcs


"ListContourPlot crush on simple 5-points data" (Question title)

"Yes, this must be love at first sight."ruebenko


... but I am working with a large body of code written by an incompetent fool (i.e. myself, several years ago...) – Simon Woods


I was tempted to edit your title: "Do rules rule?" But my nose is still bleeding as a result of a limerick. – belisarius


No, but they nowadays let me turn off the lights at night; 24 hours of fluorescence was really starting to make me feral. Brett says I should also mention the tip jar... – Daniel Lichtblau Mar 13 '12 at 20:48


Project Euler


Jul
8
answered Why does pattern test not work in this case to restrict the function parameters?
Jul
8
comment Defining the Moyal Product in Mathematica
Please try to summarize the important points from these comments and include them in the answer (or question).
Jul
8
comment How to test whether an expression is a valid variable?
Since expressions contained in Defer cannot be easily used programmatically I do not anticipate using this construct. In fact I would find it confusing for this to fail: a[1] = 2; r = f[a[1]^2 + 2 a[1] + 1 == 0, a[1]]; ClearAll[a]; a[1] /. r, meaning that it returns: {{a[1] -> -1}, {a[1] -> -1}} and {a[1], a[1]}. One could replace Defer with HoldPattern which would give this output for the same input: {{HoldPattern[a[1]] -> -1}, {HoldPattern[a[1]] -> -1}} and {-1, -1} but that is hardly clean. What utility do you see in this construct?
Jul
8
answered How to test whether an expression is a valid variable?
Jul
8
comment Customizing the distance of plot frame tick labels to frame
I marked this question as a duplicate because it clearly seems to be, unless I've overlooked an aspect of your question. I don't find the answers to that question highly satisfying but I am not aware of a better way or I would post it. Be sure to also read the answers to the questions kguler linked above.
Jul
8
revised Problem regarding 3D plot of a Moebius strip from a set of 2D points
include data import
Jul
8
revised Problem regarding 3D plot of a Moebius strip from a set of 2D points
rolled back to a previous revision
Jul
8
comment Problem regarding 3D plot of a Moebius strip from a set of 2D points
MasterApprentice, it is not necessary to copy the answer you use into your question or add SOLVED to the title. Your Accept already floats that answer to the top and shows everyone that it solved your problem or was otherwise satisfying.
Jul
8
comment Rotating an image along a Möbius strip?
The package is supposed to be "for Mathematica version 6 or later" but I get a black surface with no visible text when I try it in v7 under Windows. Any idea what I might be doing wrong?
Jul
8
comment Why evaluation doesn't fail if arguments are invalid?
Please also see: (23345)
Jul
8
comment Placement of pattern matching rules in functions
@rasher I believe you are mistaken. The only time (that I recall) the body should be evaluating is when Condition is used inside With or Module. (As I mention here.)
Jul
8
revised Function pattern to support listed and non-listed arguments
added 28 characters in body
Jul
8
comment Function pattern to support listed and non-listed arguments
I feel that this question is a duplicate of: (26686) -- if anyone disagrees please say so.
Jul
8
answered Function pattern to support listed and non-listed arguments
Jul
8
revised Initialize table in a Module but Break if criteria not met
added 60 characters in body
Jul
8
answered Pattern matching to head with HoldFirst
Jul
8
awarded  Favorite Question
Jul
8
revised Using a PatternTest versus a Condition for pattern matching
attempt to clarify statement
Jul
8
comment Defining a function that differentiates another function with rule replacement
Nice answer. +1
Jul
7
comment The mysterious gap inside Grid
@Jonie That may well be. Also, I think I've seen this problem before, perhaps even as a Question here.