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Accessing the index in 'for' loops?
How do I access the index in a for loop like the following?
20 Answers
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What Are the Differences Between PSR-0 and PSR-4?
...using. The summary is that PSR-0 had some backwards compatibility features for PEAR-style classnames that PSR-4 dropped, as such it only supports namespaced code. On top of that PSR-4 does not force you to have the whole namespace as a directory structure, but only the part following the anchor poin...
how to set “camera position” for 3d plots using python/matplotlib?
...am trying to do at the moment is a little animation of a rotating surface. For that purpose, I need to set a camera position for the 3D projection. I guess this must be possible since a surface can be rotated using the mouse when using matplotlib interactively. But how can I do this from a script?
I...
How to connect to Mysql Server inside VirtualBox Vagrant?
...d Mysql Server. How can I connect to that server outside the vm? I already forward the port 3306 of the Vagrantfile , but when I try to connect to the mysql server, it`s resposts with the error:
'reading initial communication packet'
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Convert light frequency to RGB?
Does anyone know of any formula for converting a light frequency to an RGB value?
9 Answers
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What is the difference between NULL, '\0' and 0?
...might be possible to #undef NULL and redefine it to something wacky.
Therefore, here are some valid ways to check for a null pointer:
if (pointer == NULL)
NULL is defined to compare equal to a null pointer. It is implementation defined what the actual definition of NULL is, as long as it is a v...
Vagrant's port forwarding not working [closed]
I'm running into a small problem at the end of the Getting Started guide for vagrant . I'm working on a CentOS basebox that has Apache2 running (provisioning via Puppet). I've set up port forwarding for web requests using the following line in Vagrantfile :
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Any shortcut to initialize all array elements to zero?
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A default value of 0 for arrays of integral types is guaranteed by the language spec:
Each class variable, instance variable, or array component is initialized with a default value when it is created (§15.9, §15.10) [...] For type int, the ...
pyplot scatter plot marker size
In the pyplot document for scatter plot:
6 Answers
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Circle drawing with SVG's arc path
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Same for XAML's arc. Just close the 99.99% arc with a Z and you've got a circle!
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