Blog articles tagged 'programming'

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on 12/21/2011 6:46 PM
Generic type parameters were introduced in C# 2.0, and they gave us the ability to write code that works against any type that matches a set of constraints and remove the need to create type-specific overloads, e.g.: A few years passed, and dynamic types [...]
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on 12/11/2011 3:30 PM
Due to popular demand… well, I had a couple of requests anyway :-) Heres a post inspired by my recent encounters profiling some of the code in Fracture-IO.
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on 12/10/2011 2:12 PM
A little while ago I put together a quick performance test comparing the BCL’s BinaryFormatter with that of Marc Gravell’s protobuf-net library (.Net implementation of Google’s protocol buffer format). You can read more about my results here. There’s anot[...]
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on 11/30/2011 9:31 PM
Starting on December 5th and running for six weeks, the author of "Clojure in Action", Amit Rathore, is leading an online introduction to Clojure course for just $325. See the CodeLesson web site for more details on this Clojure course. I'm fortunate that[...]
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on 11/30/2011 5:10 PM
I stumbled upon this interesting question on StackOverflow today, Jon Harrop’s answer mentions a significant overhead in adding and iterating over a SortedDictionary and Map compared to using simple arrays. Thinking about it, this makes sense, the SortedD[...]
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on 11/18/2011 12:30 AM
Following my back-to-back talks with the UK Developers Group and NxtGenUG Southampton, I just like to say thanks those guys for having me, it’s been a great pleasure For anyone interested, here are the links to the slides and the source code I used for th[...]
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on 9/11/2011 9:10 AM
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[...]
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on 9/11/2011 6:07 AM
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[...]
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on 9/9/2011 4:34 PM
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[...]
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on 9/8/2011 11:11 AM
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 [...]
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