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Do I encode ampersands in ?
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Yes, you should convert & to &.
This html validator tool by W3C is helpful for questions like this. It will tell you the errors and warnings for a particular page.
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How to un-submodule a Git submodule?
...rt "Aborted!"
}
function warn() {
cat << EOF
This script will convert your "${sub}" git submodule into
a simple subdirectory in the parent repository while retaining all
contents and file history.
The script will:
* delete the ${sub} submodule configuration from .gitm...
All falsey values in JavaScript
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Regarding loose comparison: because Booleans are converted to numbers, x == false will call ToNumber(x) which is just very different from ToBoolean(x). Might be worth explaining. Also I just noticed that I already commented on this answer ages ago :D
–...
How to get function parameter names/values dynamically?
...pt length. For example, it does not have the pop method. However it can be converted to a real Array:
var args = Array.prototype.slice.call(arguments);
If Array generics are available, one can use the following instead:
var args = Array.slice(arguments);
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Does JavaScript have “Short-circuit” evaluation?
...or in expr1 && expr2 is executed followingly:
If expr1 can be converted to true, returns expr2; else, returns expr1.
So this means, in our practical example, the const res is evaluated the following way:
Invoking expr1 - sanitise(0xFF)
0xFF is a valid hexadecimal number for 250, oth...
How can I get query string values in JavaScript?
.../This doesn't output anything, it just updates the $.QueryString object
//Convert object into string suitable for url a querystring (Requires jQuery)
$.param($.QueryString)
//This outputs something like...
//"param=newvalue&param2=val"
//Update the url/querystring in the browser's location bar...
Lock, mutex, semaphore… what's the difference?
... enter, this can be used for example to limit the number of cpu, io or ram intensive tasks running at the same time.
For a more detailed post about the differences between mutex and semaphore read here.
You also have read/write locks that allows either unlimited number of readers or 1 writer at an...
Why does Date.parse give incorrect results?
...ay be an abbreviation and may be different in different implementations.
Converts from UTC to Local time before printing
- toString
- toDateString
- toTimeString
- toLocaleString
- toLocaleDateString
- toLocaleTimeString
Prints the stored UTC time directly
- toUTCString
- toISOString
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Checking images for similarity with OpenCV
...ive error between images.
double errorL2 = norm( A, B, CV_L2 );
// Convert to a reasonable scale, since L2 error is summed across all pixels of the image.
double similarity = errorL2 / (double)( A.rows * A.cols );
return similarity;
}
else {
//Images have a different size
ret...
Hook up Raspberry Pi via Ethernet to laptop without router? [closed]
...how-to-set-up-raspberry-pi-without-a-monitor/54393#54393
UART serial USB converter
This is an alternative to SSH if you just want to get a shell on the Pi: https://en.wikipedia.org/wiki/Serial_port
This does not use SSH or networking itself, but rather the older, simpler, more direct, more relia...