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Execution time of C program
...nux, and you've reduced your (micro)benchmark to a program with negligible startup overhead, e.g. a static executable that runs your hot loop for a few seconds, you can use perf stat ./a.out to get HW performance counters for cache misses and branch mispredicts, and IPC.
– Pete...
Invoke(Delegate)
... new Thread(SetText1);
var thread2 = new Thread(SetText2);
thread1.Start();
thread2.Start();
}
private void SetText1()
{
textBox1.Text = "Test";
}
private void SetText2()
{
textBox1.Invoke(new Action(() => textBox1.Text = "Test"));
}
...
Is there a way to measure how sorted a list is?
... no more expensive (in terms of complexity) than the sorting algorithm you started with.
If you take this route, be aware that it's not as simple as counting "swaps." Mergesort, for example, is worst case O(N log N), yet if it is run on a list sorted in descending order, it will correct all N choose...
Worth switching to zsh for casual use? [closed]
...
I tried the above, however afterwards whenever I start bash I get 4 "unary operator expected" and 4 "too many arguments" errors.
– AnnanFay
Nov 21 '12 at 18:14
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How to send a message to a particular client with socket.io
I'm starting with socket.io + node.js, I know how to send a message locally and to broadcast socket.broadcast.emit() function:- all the connected clients receive the same message.
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How to use glOrtho() in OpenGL?
...dowHeight). Note that I've flipped the Y values because OpenGL coordinates start from the bottom left corner of the window. So by flipping, I get a more conventional (0,0) starting at the top left corner of the window rather.
Note that the Z values are clipped from 0 to 1. So be careful when you sp...
HTTP 1.0 vs 1.1
...be closed. This lead to some big efficiency problems because of TCP Slow Start.
OPTIONS method:
HTTP/1.1 introduces the OPTIONS method. An HTTP client can use this method to determine the abilities of the HTTP server. It's mostly used for Cross Origin Resource Sharing in web applications.
Cac...
Get epoch for a specific date using Javascript
...e) in milliseconds
// **Warning**: notice that MONTHS in JavaScript Dates starts in zero (0 = January, 11 = December)
Method 2: Machine's timezone independent
However, if you want to get ride of variations in timezone and get time since Epoch for a specified Date in UTC (that is, timezone inde...
Hadoop “Unable to load native-hadoop library for your platform” warning
I'm currently configuring hadoop on a server running CentOs . When I run start-dfs.sh or stop-dfs.sh , I get the following error:
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How to print the current Stack Trace in .NET without any exception?
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Isn't it annoying that Environment.StackTrace always starts out with at System.Environment.GetStackTrace(Exception e, Boolean needFileInfo) at System.Environment.get_StackTrace()? That's not part of the current stack trace as at the point that someone's looking for it.
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