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Calling C++ class methods via a function pointer
...myfunction (arg);.
This kind of thing is fairly common when using the old Win32 APIs, which were originally designed for C rather than C++. Of course in that case, the parameter is normally LPARAM or similar rather than a pointer, and some casting is needed.
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How to apply multiple styles in WPF
.... I also have a separate style which I would like to add to it without blowing away the first one. The styles have different TargetTypes, so I can't just extend one with the other.
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CORS - What is the motivation behind introducing preflight requests?
...thout putting existing servers at risk? Or was it shortsighted to doom the internet to wasted bandwidth and doubled latency just to accommodate bugs in a particular server at a particular time?
Opinions differ.
Well, at the very least browsers will cache the preflight for a single URL?
Yes. Thoug...
Xamarin 2.0 vs Appcelerator Titanium vs PhoneGap [duplicate]
...7/2014; this has been a huge annoyance, especially since the advent of the Internet of Things. You can get support for Bluetooth with the purchase of a library bridge on their marketplace which currently runs at $350. Despite a huge outcry for support in their community, it is still unclear to this ...
Call An Asynchronous Javascript Function Synchronously
...t can't be done, as I suspected, I just needed the collected wisdom of the Internets to back me up. Thank you. :-)
– Robert C. Barth
Feb 3 '12 at 7:06
2
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Speed comparison with Project Euler: C vs Python vs Erlang vs Haskell
...are some problems with the Erlang implementation. As baseline for the following, my measured execution time for your unmodified Erlang program was 47.6 seconds, compared to 12.7 seconds for the C code.
The first thing you should do if you want to run computationally intensive Erlang code is to use ...
#define macro for debug printing in C?
... Years later, and this answer is still the most useful out of all the internets, on how to alias printk! vfprintf does not work in kernel space since stdio is not available. Thank you! #define debug(...) \ do { if (DEBUG) \ printk("DRIVER_NAME:"); \ printk(__VA_ARGS__); \ print...
Functional programming - is immutability expensive? [closed]
...bvious disadvantages of a functional quicksort implementation. In the following, let’s consider this reference implementation in Haskell (I don’t know Scala …) from the Haskell introduction:
qsort [] = []
qsort (x:xs) = qsort lesser ++ [x] ++ qsort greater
where lesser = (filter (<...
What does “Memory allocated at compile time” really mean?
... to generate the assembly, but there are wonderful tools to do this on the Internet in a friendly manner. My favourite is GCC Explorer.
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Qt events and signal/slots
...he event loop. Each GUI program needs an event loop, whatever you write it Windows or Linux, using Qt, Win32 or any other GUI library. As well each thread has its own event loop. In Qt "GUI Event Loop" (which is the main loop of all Qt applications) is hidden, but you start it calling:
QApplication...