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vagrant up failed, /dev/vboxnetctl: no such file or directory
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I'm running macOS High Sierra 10.13.1 and VirtualBox 5.2.2.
This worked for me:
Grant permission to VirtualBox under System Preferences > Security & Privacy > General (this request is new to macOS High Sierra)
Open Terminal and run: sudo "/Library/Application Support/VirtualBox/LaunchD...
CSS hexadecimal RGBA?
...t the green, blue, and alpha channels, respectively.
What does this mean for the future of CSS colours?
This means that assuming this isn't completely removed from the Level 4 document, we'll soon be able to define our RGBA colours (or HSLA colours, if you're one of those guys) in hexadecimal for...
Referring to a file relative to executing script
... detailed below, has flaws and will only work in specific cases. First and foremost, try to avoid the problem entirely by not depending on the location of your script!
If you need to write a very reusable tool, then taking the correct path as a parameter to your script is going to be the most reli...
How to read environment variables in Scala
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Since Scala 2.9 you can use sys.env for the same effect:
scala> sys.env("HOME")
res0: String = /home/paradigmatic
I think is nice to use the Scala API instead of Java. There are currently several project to compile Scala to other platforms than JVM (.NET,...
binning data in python with scipy/numpy
... a more efficient way to take an average of an array in prespecified bins? for example, i have an array of numbers and an array corresponding to bin start and end positions in that array, and I want to just take the mean in those bins? I have code that does it below but i am wondering how it can be ...
How do I fix PyDev “Undefined variable from import” errors?
...on project using PyDev in Eclipse, and PyDev keeps generating false errors for my code. I have a module settings that defines a settings object. I import that in module b and assign an attribute with:
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What is a non-capturing group in regular expressions?
...ng groups, i.e. (?:) , used in regular expressions and what are they good for?
15 Answers
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Go Unpacking Array As Arguments
So in Python and Ruby there is the splat operator (*) for unpacking an array as arguments. In Javascript there is the .apply() function. Is there a way of unpacking an array/slice as function arguments in Go? Any resources for this would be great as well!
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PHP session lost after redirect
...st, carry out these usual checks:
Make sure session_start(); is called before any sessions are being called. So a safe bet would be to put it at the beginning of your page, immediately after the opening <?php declaration before anything else. Also ensure there are no whitespaces/tabs before the...
jQuery `.is(“:visible”)` not working in Chrome
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It seems jQuery's :visible selector does not work for some inline elements in Chrome. The solution is to add a display style, like "block" or "inline-block" to make it work.
Also note that jQuery has a somewhat different definition of what is visible than many developers:
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