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Happy New Year!


(also known as Spartacus)

Project Euler


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



2d
comment A problem with functions and Infinite expression 1/0 encountering
Related, I believe: What is the cleanest way to prevent divide-by-zero warnings?
2d
revised A problem with set values
added 673 characters in body
2d
comment How to get mathematica to simplify a result
Okay. Please include Mathematica code also for your "equivalent" expression so that there is no more miscommunication.
2d
answered A problem with set values
2d
comment Map structure of irregular list, Flatten then reconstruct list using structure
Interesting; in version 7 I just get Extract::argtu: Extract called with 1 argument; 2 or 3 arguments are expected. >> and the expression unevaluated. I suspect they are extending Extract but for some reason the functionality wasn't finalized. MapAt was silently extended to work with Span as well. You should post a self-Q&A about this behavior in my opinion. I bet it will get a lot of votes.
2d
revised How to apply function f for each time value t, to each pixel from image, resulting in t images
edited tags
2d
comment Map structure of irregular list, Flatten then reconstruct list using structure
Please tell me about this Extract behavior. I hope you will make use of my dynamicPartition function; I put some thought into its construction, e.g. partitioning non-List expressions, and I find it quite useful myself. And please let me know if you can improve it!
2d
comment Map structure of irregular list, Flatten then reconstruct list using structure
Would you please give an example of the type of operation you wish to perform on the reconstructed matrices?
2d
comment Map structure of irregular list, Flatten then reconstruct list using structure
Regarding ranger see this Q&A and this comment and link. As I like to say to Leonid in these cases: "Great minds think alike." :-)
2d
revised What does “levelspec” mean in the documentation?
added 6 characters in body
2d
revised Scan vs Map vs Apply
deleted 9 characters in body
2d
comment Solving nonlinear system by newton method
Qasem, your questions are not written in a manner that is adequate and appropriate for this site. You must improve the quality and content of your questions or you will be temporarily blocked from posting. This is a final warning. Please look carefully at other questions on this site, specifically ones that have been well received (are positively voted and answered), and consider how you may write your questions similarly.
2d
revised Scan vs Map vs Apply
deleted 1 character in body
2d
answered Scan vs Map vs Apply
2d
revised How to represent a list as a cycle
deleted 1 characters in body
2d
comment Sorting a table of vectors with weights
Related: (16115), (16507), (26574). Loosely related: (17041)
2d
comment Mathematica not recognising closed forms as specific values
Closely related: mathematica.stackexchange.com/q/40080/121
2d
comment Randomly selecting and reinserting a subset of elements in a list
My place2 seems to produce the same distribution over a series of 100,000 runs but I don't have proof. I look forward to your conclusions as your thinking smokes seem quite effective. :-)
2d
comment Shift text upwards in graphics so characters with descenders clear horizontal lines
+1, but where is the code to generate this graphic? Is it from the documentation?
2d
revised Randomly selecting and reinserting a subset of elements in a list
add optimized method