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How do I use vim registers?
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Registers in Vim let you run actions or commands on text stored within them. To access a register, you type "a before a command, where a is the name of a register. If you want to copy the current line into register k, you can type
"kyy
Or you can append to a regis...
Reliable way for a Bash script to get the full path to itself [duplicate]
...up with (edit: plus some tweaks provided by sfstewman, levigroker, Kyle Strand, and Rob Kennedy), that seems to mostly fit my "better" criteria:
SCRIPTPATH="$( cd "$(dirname "$0")" >/dev/null 2>&1 ; pwd -P )"
That SCRIPTPATH line seems particularly roundabout, but we need it rather than...
Why am I getting a “401 Unauthorized” error in Maven?
...f you supply the wrong credentials (password etc). You also get an error (and off the top of my head is also a 401) if you try to publish something to a releases repository and that version already exists in the repository. So you might find that by publishing from the command line it works, but t...
Find unique rows in numpy.array
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+1 This is clear, short and pythonic. Unless speed is a real issue, these type of solutions should take preference over the complex, higher voted answers to this question IMO.
– Bill Cheatham
Apr 30 '14 at 13:3...
Accessing localhost:port from Android emulator
...ith the IP address "10.0.2.2".
This has been designed in this way by the Android team. So your webserver can perfectly run at localhost and from your Android app you can access it via "http://10.0.2.2:<hostport>".
If your emulator must access the internet through a proxy server, you can con...
Optional Parameters with C++ Macros
...s the list of arguments twice, first to form the name of the helper macro, and then to pass the arguments to that helper macro. It uses a standard trick to count the number of arguments to a macro.
enum
{
plain = 0,
bold = 1,
italic = 2
};
void PrintString(const char* message, int siz...
Validate decimal numbers in JavaScript - IsNumeric()
...ring this set of +30 unit tests made to numerous function implementations, and also share the one that passes all my tests:
function isNumeric(n) {
return !isNaN(parseFloat(n)) && isFinite(n);
}
P.S. isNaN & isFinite have a confusing behavior due to forced conversion to number. In...
Creating a Radial Menu in CSS
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Almost 3 years later, I finally made the time to revisit this and post an improved version. You can still view the original answer at the end for reference.
While SVG may be the better choice, especially today, my goal with this was to keep it just HTML and CSS, no JS, no SVG, no image...
Convert RGB to RGBA over white
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Take the lowest color component, and convert that to an alpha value. Then scale the color components by subtracting the lowest, and dividing by the alpha value.
Example:
152 converts to an alpha value of (255 - 152) / 255 ~ 0.404
152 scales using (152 - 1...
How do I get Flask to run on port 80?
I have a Flask server running through port 5000, and it's fine. I can access it at http://example.com:5000
14 Answers
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