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Telling gcc directly to link a library statically
...itten, variant 2 -Wl,-Bstatic -llib2 -Wl,-Bdynamic is just long and adds 2 extra options and assumes default mode as Bdynamic, and accepted variant 3 -l:libXYZ.a is short and just works. All three will work for many cases, and variant 2 may not work when linking static programs. Actual linking step ...
How does one write code that best utilizes the CPU cache to improve performance?
...rewriting techniques known as tiling or blocking all strive to avoid those extra memory fetches.
While there are some rules of thumb for this rewrite exercise, you typically have to carefully consider loop carried data dependencies, to ensure that you don't affect the semantics of the program.
The...
Eclipse and Windows newlines
...e feed when given a new line. Unix-systems just insert a line feed. So the extra carriage return character could be the reason why your eclipse messes up with the newlines.
Grab one or two files from your project and convert them. You could use Notepad++ to do so. Just open the file, go to Format-&...
Table Header Views in StoryBoards
...heightForHeaderInSection:(NSInteger)section code otherwise I'd end up with extra space above the header view itself. Also, in order for this header to "stick" at the top of the table view, I had to implement viewForHeaderInSection:(NSInteger)section and return this view.
– ozz
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How using try catch for exception handling is best practice
...e
try
{
...
}
catch(Exception ex)
{
throw new ApplicationException(string.Format("I cannot write the file {0} to {1}", fileName, directoryName), ex);
}
There is a lot to do with exception handling (Custom Exceptions) but thoses rules I try to keep in mind are enough for the simple applicat...
Ways to circumvent the same-origin policy
...The MessageEvent has the type message, a data property which is set to the string value of the first argument provided to window.postMessage, an origin property corresponding to the origin of the main document in the window calling window.postMessage at the time window.postMessage was called, and a ...
Error :Request header field Content-Type is not allowed by Access-Control-Allow-Headers
...rigin to *, but it appears that recent versions of Chrome are requiring an extra header. Try prepending the following to your file if you are using PHP:
header("Access-Control-Allow-Origin: *");
header("Access-Control-Allow-Headers: Origin, X-Requested-With, Content-Type, Accept");
Make sure tha...
What is a mixin, and why are they useful?
...and from XML. You want the type to provide a "ToXML" method that returns a string containing an XML fragment with the data values of the type, and a "FromXML" that allows the type to reconstruct its data values from an XML fragment in a string. Again, this is a contrived example, so perhaps you use ...
The thread has exited with code 0 (0x0) with no unhandled exception
...
Executing Linq queries can generate extra threads.
When I try to execute code that uses Linq query collection in the immediate window it often refuses to run because not enough threads are available to the debugger.
As others have said, for threads to exit whe...
Difference between -pthread and -lpthread while compiling
...nswer, but, IMO, it doesn't provide enough context and insight. Hence this extra answer.
-lpthread is a solution for a problem that no longer exists (since ~2005).
In the old days there were proprietary implementations of Pthreads API that weren't POSIX-compliant, like LinuxThreads. POSIX standard ...