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When is the thread pool used?
... in a single event loop. It's single threaded, and you only ever get that one thread. All of the javascript you write executes in this loop, and if a blocking operation happens in that code, then it will block the entire loop and nothing else will happen until it finishes. This is the typically s...
How to “pull” from a local branch into another one?
...rom the local repository instead of the origin repository. No fetching is done (because everything from the local repository is already here!). There's no advantage – both commands do more or less the same. If you are doing fast-forwards, you could use push . origin/branch:branch (not pull) to upd...
Passing a single item as IEnumerable
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Suppose you decided to create one enumerable to pass to two different methods... then the first one cast it to an array and changed the contents. You then pass it as an argument to another method, unaware of the change. I'm not saying it's likely, just th...
how to delete all cookies of my website in php
...ere are 2 cookies with the same name, but with different domain settings. One of them will make it into the $_COOKIE array, and the other won't. But they will both be visible in HTTP_COOKIE. If you want to clean this situation up, this is the way to do it.
– dlo
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How do I convert CamelCase into human-readable names in Java?
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Could someone please explain what %s|%s|%s mean with respect to the testcases and also generally?
– Ari53nN3o
Nov 11 '14 at 23:11
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python location on mac osx
...in should always be or link to files supplied by Apple in OS X, unless someone has been ill-advisedly changing things there. To see exactly where the /usr/local/bin/python is linked to:
$ ls -l /usr/local/bin/python
lrwxr-xr-x 1 root wheel 68 Jul 5 10:05 /usr/local/bin/python@ -> ../../../L...
What's “tools:context” in Android layout files?
...associated with an activity. It can of course be associated with more than one, but at least one. In the tool, we need to know about this mapping (which at runtime happens in the other direction; an activity can call setContentView(layout) to display a layout) in order to drive certain features.
Ri...
Java code To convert byte to Hexadecimal
...is sign-extended to a 32-bit int. To effectively undo this sign extension, one can mask the byte with 0xFF.
byte b = -1;
System.out.println(Integer.toHexString(b & 0xFF));
// prints "ff"
Another issue with using toHexString is that it doesn't pad with zeroes:
byte b = 10;
...
Using PHP with Socket.io
...pplication through socket.io and websockets for actions that could not be done in full javascript.
example from the project website (communicate with websocket server through php)
php server
use ElephantIO\Client as Elephant;
$elephant = new Elephant('http://localhost:8000', 'socket.io', 1, fals...
Two-way encryption: I need to store passwords that can be retrieved
...e. There are some encryption schemes that are impossible to crack such as OneTimePad).
Where do I store the private key?
What I would do is use 3 keys. One is user supplied, one is application specific and the other is user specific (like a salt). The application specific key can be stored anywh...