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Why are floating point numbers inaccurate?
...ted a lot like scientific notation: with an exponent and a mantissa (also called the significand). A very simple number, say 9.2, is actually this fraction:
5179139571476070 * 2 -49
Where the exponent is -49 and the mantissa is 5179139571476070. The reason it is impossible to represent some de...
How does one get started with procedural generation?
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Procedural content generation is now all written for the GPU, so you'll need to know a shader language. That means GLSL or HLSL. These are languages tied to OpenGL and DirectX respectively.
While my personal preference is for Dx11 / HLSL due to speed, an easi...
JavaScript: How do I print a message to the error console?
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Install Firebug and then you can use console.log(...) and console.debug(...), etc. (see the documentation for more).
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Viewing all `git diffs` with vimdiff
...n saving changes you have to type :w! instead of :w". That is because git calls vimdiff with the -R option. You can override it with git config --global difftool.vimdiff.cmd 'vimdiff "$LOCAL" "$REMOTE"'. That will open vimdiff in writeable mode.
– wisbucky
Apr ...
Is there a [Go to file…]?
...e name of this action is "Open Quickly..."
– Michal Gallovic
Apr 25 at 10:48
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Dismissing a Presented View Controller
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I think Apple are covering their backs a little here for a potentially kludgy piece of API.
[self dismissViewControllerAnimated:NO completion:nil]
Is actually a bit of a fiddle. Although you can - legitimately - call this on the presented view controller, all it does is forward the me...
Cannot push to Heroku because key fingerprint
... I followed this post and others of the same kind without success :-((
Finally, I found the solution:
I had to add my new rsa identity in my machine!
So, first of all I created a new rsa key:
ssh-keygen -t rsa -C "giordano.scalzo[at]gmail.com" -f ~/.ssh/id_rsa_heroku
then added it to my machin...
Detect IF hovering over element with jQuery
I'm not looking for an action to call when hovering, but instead a way to tell if an element is being hovered over currently. For instance:
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How to run Node.js as a background process and never die?
...ill %2 with the number being the index of the process.
Powerful solution (allows you to reconnect to the process if it is interactive):
screen
You can then detach by pressing Ctrl+a+d and then attach back by running screen -r
Also consider the newer alternative to screen, tmux.
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Why is NaN not equal to NaN? [duplicate]
...n this question pops up in searches.
NaN is designed to propagate through all calculations, infecting them like a virus, so if somewhere in your deep, complex calculations you hit upon a NaN, you don't bubble out a seemingly sensible answer. Otherwise by identity NaN/NaN should equal 1, along with ...