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What is boxing and unboxing and what are the trade offs?
...alue on the heap. Frequently that's just the machine types (ints, floats, etc), structs, and sometimes static sized arrays. .NET-land calls them value types (as opposed to reference types). Java folks call them primitive types. Haskellions just call them unboxed.
** I'm also focusing on Java, H...
Media query to detect if device is touchscreen
...ery features.
if (Modernizr.touch){
// bind to touchstart, touchmove, etc and watch `event.streamId`
} else {
// bind to normal click, mousemove, etc
}
However, using CSS, there are pseudo class like, for example in Firefox. You can use :-moz-system-metric(touch-enabled). But these feature...
What is Normalisation (or Normalization)?
...tion is when you are given legacy data, out of a legacy database or out of files made up
(How) can I count the items in an enum?
...ainerClass *m_containers[Folders_MAX + 1];
....
m_containers[FA] = ...; // etc.
Edit: Regarding { FA, FB, FC, Folders_MAX = FC} versus {FA, FB, FC, Folders_MAX]: I prefer setting the ...MAX value to the last legal value of the enum for a few reasons:
The constant's name is technically more accur...
What's to stop malicious code from spoofing the “Origin” header to exploit CORS?
...calls, sending expensive emails, sending even more expensive sms messages, etc.). When that was done, the server happily sent the spoofed Access-Control-Allow-Origin header back to the browser.
The documentation I've read states that the Access-Control-Allow-Origin value received must match the Ori...
Difference between .on('click') vs .click()
...d obviously there are other similar shortcut methods for "keyup", "focus", etc.)
The reason I'm posting an extra answer is to mention what happens if you call .click() with no parameters:
$("#whatever").click();
// is a shortcut for
$("#whatever").trigger("click");
Noting that if you use .trigge...
How to implement a secure REST API with node.js
...ort them to a keystore (some programs use a keystore)
keytool -importcert -file certificate.pem -keystore my.keystore
*/
var securityOptions = {
key: fs.readFileSync('key.pem'),
cert: fs.readFileSync('certificate.pem'),
requestCert: true
};
// .............................................
Javascript library for human-friendly relative date formatting [closed]
....
It supports timeago, formatting, parsing, querying, manipulating, i18n, etc.
Timeago (relative time) for dates in the past is done with moment().fromNow(). For example, to display January 1, 2019 in the timeago format:
let date = moment("2019-01-01", "YYYY-MM-DD");
console.log(date.fromNow...
How do I print the elements of a C++ vector in GDB?
...t of the $HOME/.gdbinit was necessary. At the moment I end up with no such file at all and gdb correctly showing the content of std::vector. However, since during my "rambling" attempts I just installed and then unistalled cgdb, and I already had libstdc++5 installed, I have no idea why the pretty p...
What's the recommended way to extend AngularJS controllers?
...ss controllers that do similar things(one is for editing, another creating etc...). This is definitely one of the solutions...
– vladexologija
May 14 '13 at 10:22
1
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