We’ve decided to do it again. After the success of the Functional Programming eXchange 2011 and 2009, we have decided to put on another edition. Functional Programming eXchange 2012 will take place on Friday March 16th March 2012, at the Skills Matter eXc[...]

Problem Each character on a computer is assigned a unique code and the preferred standard is ASCII (American Standard Code for Information Interchange). For example, uppercase A = 65, asterisk (*) = 42, and lowercase k = 107. A modern encryption method is[...]

Problem A common security method used for online banking is to ask the user for three random characters from a passcode. For example, if the passcode was 531278, they may ask for the 2nd, 3rd, and 5th characters; the expected reply would be: 317. The text[...]

Problem Some positive integers n have the property that the sum [ n + reverse(n) ] consists entirely of odd (decimal) digits. For instance, 36 + 63 = 99 and 409 + 904 = 1313. We will call such numbersreversible; so 36, 63, 409, and 904 are reversible. Lea[...]

The WebSharper Extensions for Formlets for jQuery Mobile give you the power of jQuery Mobile combined with the succinctness of formlets.

Problem The number 145 is well known for the property that the sum of the factorial of its digits is equal to 145: 1! + 4! + 5! = 1 + 24 + 120 = 145 Perhaps less well known is 169, in that it produces the longest chain of numbers that link back to [...]

The first of this series covered our general aims how we’d be structuring the project. This post will cover how we get the data into RavenDB. First we need to download the data. I got it obtained the data from this site, you need to click the “téléchange[...]

So Stack Overflow Dev Days has been cancelled. Obviously it’s a big disappointment to everyone involved, I thought the line up for the London event was great and I was looking forward to attending the conference as much as I was looking forward to speakin[...]

Problem Peter has nine four-sided (pyramidal) dice, each with faces numbered 1, 2, 3, 4. Colin has six six-sided (cubic) dice, each with faces numbered 1, 2, 3, 4, 5, 6. Peter and Colin roll their dice and compare totals: the highest total wins. The resul[...]

Problem By counting carefully it can be seen that a rectangular grid measuring 3 by 2 contains eighteen rectangles: Although there exists no rectangular grid that contains exactly two million rectangles, find the area of the grid with the nearest solution[...]