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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);
...
Why not use java.util.logging?
...o I would think that a massive library written in 2002 with log4j could be converted to JUL in a matter of minutes with an automated tool. (I don't know if one exist, though). So why doesn't it happen?
– peterh
Jul 6 '12 at 9:49
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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...
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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Why should casting be avoided? [closed]
...ion's pretty simple (at least IMO): a cast (obviously enough) means you're converting something from one type to another. When/if you do that, it raises the question "Why?" If you really want something to be a particular type, why didn't you define it to be that type to start with? That's not to say...
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...
What's the difference between using CGFloat and float?
...memory, which can result in using more memory overall. so its def worth to convert everything up to 64-bits. (unless you want to support 5.1+ or 6.0+ still)
– phil88530
Dec 30 '13 at 14:26
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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...