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What resources are shared between threads?
...n asked a question in an interview what's the difference between a process and a thread. Really, I did not know the answer. I thought for a minute and gave a very weird answer.
...
how to make twitter bootstrap submenu to open on the left side?
...ve got a problem: I have dropdown menu in the top right corner of the page and that menu has one more submenu. However, when submenu opens - it does not fit in the window and goes too much to the right, so that user can see only first letters. How to make that submenu to open not to the right, but t...
TCP loopback connection vs Unix Domain Socket performance
Working on an Android and iOS based application which require communication with a server running in the same device. Currently using TCP loopback connection for communicating with App and Server (App written in user layer, server written in C++ using Android NDK)
...
Get a pixel from HTML Canvas?
....getContext('2d');
// Get the CanvasPixelArray from the given coordinates and dimensions.
var imgd = context.getImageData(x, y, width, height);
var pix = imgd.data;
// Loop over each pixel and invert the color.
for (var i = 0, n = pix.length; i < n; i += 4) {
pix[i ] = 255 - pix[i ]; // r...
Do HTML WebSockets maintain an open connection for each client? Does this scale?
... line of communication with the server. I'm just wondering how that scales and how many open WebSocket connections a server can handle. Maybe leaving those connections open isn't a problem in reality, but it feels like it is.
...
iOS 7 status bar back to iOS 6 default style in iPhone app?
...ost I wrote, but here is the full rundown on status bars, navigation bars, and container view controllers on iOS 7:
There is no way to preserve the iOS 6 style status bar layout. The status bar will always overlap your application on iOS 7
Do not confuse status bar appearance with status bar layou...
Remove leading comma from a string
...tring(1)
However, if you want to be able to detect if the comma is there and remove it if it is, then something like:
if (str[0] == ',') {
str = str.substring(1);
}
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Fast way of counting non-zero bits in positive integer
...1") is the fastest I could find in pure Python.
I tried adapting Óscar's and Adam's solutions to process the integer in 64-bit and 32-bit chunks, respectively. Both were at least ten times slower than bin(n).count("1") (the 32-bit version took about half again as much time).
On the other hand, gm...
Scala actors: receive vs react
...ives something. Once it receives something, a thread gets allocated to it, and it is initialized in it.
Now, the initialization part is important. A receiving thread is expected to return something, a reacting thread is not. So the previous stack state at the end of the last react can be, and is, w...
Determine if code is running as part of a unit test
...n. It only needed to do this once, then cache the result. Ugly, but simple and effective.
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