foufoux - Slashdot User

Simpler "Hello World" Demonstrated In C 582

Posted by kdawson on Tuesday March 16, 2010 @10:03PM from the non-obfuscated dept.

An anonymous reader writes "Wondering where all that bloat comes from, causing even the classic 'Hello world' to weigh in at 11 KB? An MIT programmer decided to make a Linux C program so simple, she could explain every byte of the assembly. She found that gcc was including libc even when you don't ask for it. The blog shows how to compile a much simpler 'Hello world,' using no libraries at all. This takes me back to the days of programming bare-metal on DOS!"

How To Replace FileVault With EncFS 65

Posted by timothy on Sunday February 14, 2010 @04:14PM from the for-secretive-tweakers dept.

agoston.horvath writes "I've written a HOWTO on replacing Mac OS X's built-in encryption (FileVault) with the well-known FUSE-based EncFS. It worked well for me, and most importantly: it is a lot handier than what Apple has put together. This is especially useful if you are using a backup solution like Time Machine. Includes Whys, Why Nots, and step-by-step instructions."

Man Uses Drake Equation To Explain Girlfriend Woes 538

Posted by samzenpus on Wednesday January 13, 2010 @07:57PM from the less-math-more-social-science dept.

artemis67 writes "A man studying in London has taken a mathematical equation that predicts the possibility of alien life in the universe to explain why he can't find a girlfriend. Peter Backus, a native of Seattle and PhD candidate and Teaching Fellow in the Department of Economics at the University of Warwick, near London, in his paper, 'Why I don't have a girlfriend: An application of the Drake Equation to love in the UK,' used math to estimate the number of potential girlfriends in the UK. In describing the paper on the university Web site he wrote 'the results are not encouraging. The probability of finding love in the UK is only about 100 times better than the probability of finding intelligent life in our galaxy.'"

iPhone-Controlled Helicopter With AR Games 51

Posted by Soulskill on Wednesday January 06, 2010 @04:37AM from the get-to-da-ichoppa dept.

andylim writes "Parrot has unveiled a remote-controlled helicopter that boasts augmented reality games. The helicopter is controlled using an iPhone or iPod Touch's accelerometer and touchscreen. There's a camera on the front of the helicopter, which you can use to navigate and to play augmented reality games, including a game that involves fighting a gigantic robot."

Comment The Heaviest (Score 1) 637

by foufoux on Wednesday April 16, 2008 @03:21AM (#23086996) Attached to: Schoolboy Corrects NASA's Math On Killer Asteroid

... it will create a ball of iron and iridium 320 metres (1049 feet) wide and weighing 200 billion tonnes ...

Strange... Using basic maths : The Volume of the Ball 320 meters wide is : 4/3*Pi*(D/2)^3
In this case, we are looking at 4/3*Pi*(320/2)^3,
So V = 12867963.5 m^3

So now, let's look at the density : d = W/V
Basic division gives us : d = 1554,25 g.cm^-3

According to wikipedia :
iron density is 6.98 g.cm^-3
iridium dentisty is 22.42 g.cm^-3

So, do we discover a new metal ?

Or do we need a other kid to find the mistake ?

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