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Monday, October 19, 2009 11:31 AM

Visual Studio 2010 and .NET Framework Beta 2 available on Wednesday

This blog has been abandoned for the longest time :-$ but I’ve got great news to try and re-inaugurate it (again): it’s just been announced that beta 2 for Visual Studio 2010 and .NET Framework 4 will be available the day after tomorrow, i.e. on October...
Posted by Edgar Sánchez | 1 comment(s)
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Thursday, March 12, 2009 11:57 PM

Distance between adjacent points in F#

Let’s say you are given a list of data points: [7;5;12;8;5] And you are asked to find the distance between every adjacent pair, that is: [(7-5);(5-12);(12-8);(8-5)] = [2;-7;4;3] It turns out that there is an elegant solution to this problem: let rec pairs...
Posted by Edgar Sánchez | 6 comment(s)
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Monday, November 10, 2008 11:36 PM

Free F# libraries (well, almost)

In what was one of the very last PDC2008 sessions, Luca Bolognese did an encore presentation of F#, instead of trying to tell you what it was all about I invite you to watch the video (Luca is engaging and funny, and the session is so packed with information...
Posted by Edgar Sánchez | 1 comment(s)
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Thursday, September 18, 2008 10:58 PM

Point distance, imperative vs. functional style

Let’s consider a silly simple algebra problem: given a specific point and a set of several other points, find the closest point in the set to the given point. One C# solution is:     1      static class PointMath    ...
Posted by Edgar Sánchez | 20 comment(s)
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Sunday, August 31, 2008 11:35 PM

The first Visual F# CTP is here!

You leave on vacation for one short week and a lot happens... for example, Don Syme & co. have released the first F# CTP , well on the way (hopefully before this year's end) to put F# on the same level as C#, C++ or VB.NET. As far as I know, this...
Posted by Edgar Sánchez | 1 comment(s)
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Monday, July 14, 2008 11:25 PM

F# 1.9.4.19 runs out of the box with Mono in Linux

Don Syme just announced a minor update to the F# environment , minor may be but of great interest to a certain community: it so happens that at some point F# stopped working properly in Linux, a workaround was published (and it actually works, but you...
Posted by Edgar Sánchez | 1 comment(s)
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Tuesday, May 06, 2008 1:40 AM

A cool way to find out whether a number is palindromic

In this blog entry I proposed a solution to Problem 4 at Project Euler , a crucial element of the problem is to find out whether a number is a palindrome (909 is, 809 isn't), a bit out of laziness and a bit in order to reuse existing methods, I decided...
Posted by Edgar Sánchez | 4 comment(s)
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Saturday, May 03, 2008 1:26 AM

New version of F# just released

In its way from research language to commercial language, Don Syme just announced that, silently, on May the 1st version 1.9.4.15 of F# was released .   This new version incorporates a number of specific enhancements (F# is now basically in stabilization...
Posted by Edgar Sánchez | with no comments
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Friday, May 02, 2008 12:09 AM

Which is the ten thousand first prime?

Prime numbers have a good deal of practical applications (for example in cryptography) but let's face it, even if they would have none, they would still be the favorite toy of mathematicians . In Problem 7 of Project Euler , we are asked to find the 10001st...
Posted by Edgar Sánchez | 4 comment(s)
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Sunday, April 27, 2008 9:56 PM

The square of the sum vs. the sum of the squares

The sixth Project Euler problem poses an exercise that, to me, offers no major hurdles: What is the difference between the sum of the squares and the square of the sums [of a sequence of natural numbers]? The functional C# solution is fairly easy to write...
Posted by Edgar Sánchez | 5 comment(s)
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