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How do multiple clients connect simultaneously to one port, say 80, on a server? [duplicate]
...realidBorealid
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Detect if Visual C++ Redistributable for Visual Studio 2012 is installed
...e of these reg locations may be OS-dependent. I collected this info from a Windows 10 x64 box. I'm just going to go ahead and dump all of these redist versions and the reg keys I search for to detect installation.:
Visual C++ 2005
Microsoft Visual C++ 2005 Redistributable (x64)
Registry Key: HKL...
How is Node.js inherently faster when it still relies on Threads internally?
I just watched the following video: Introduction to Node.js and still don't understand how you get the speed benefits.
6 ...
How are virtual functions and vtable implemented?
...ect(*(void **)x,8,PROT_READ|PROT_WRITE|PROT_EXEC);
// Or VirtualProtect on win32; this part's very OS-specific
(*(int (***)(A *)x)[0] = f3;
// Now C::f1() returns 0 (remember we made x into a C above)
// so x->f1() and z->f1() both return 0
The latter is rather likely to make virus-checkers ...
Optimise PostgreSQL for fast testing
...s as fsync=off without the giant data corruption risk. You do have a small window of loss of recent data if you enable async commit - but that's it.
If you have the option of slightly altering the DDL, you can also use UNLOGGED tables in Pg 9.1+ to completely avoid WAL logging and gain a real speed...
Multi-gradient shapes
I'd like to create a shape that's like the following image:
5 Answers
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How to color System.out.println output? [duplicate]
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Note
You may not be able to color Window's cmd prompt, but it should work in many unix (or unix-like) terminals.
Also, note that some terminals simply won't support some (if any) ANSI escape sequences and, especially, 24-bit colors.
Usage
Please refer to t...
What belongs in an educational tool to demonstrate the unwarranted assumptions people make in C/C++?
...mulator)
I'll be updating these later:
Borland C++ Builder 6.0 on Windows XP
..04 a char is signed
but 'CHAR_MIN==SCHAR_MIN' is false.
..08 overshifting is okay
but '(1<<bits_per_int)==0' is false.
..09 overshifting is *always* okay
but '(1<<BITS_PER_INT)==0' is false....
Pointers vs. values in parameters and return values
...n find situations where copying even large structs turns out a performance win, but the rule of thumb is not to.
For slices, you don't need to pass a pointer to change elements of the array. io.Reader.Read(p []byte) changes the bytes of p, for instance. It's arguably a special case of "treat littl...
使用虚拟现实和App Inventor进行实验 · App Inventor 2 中文网
...增强现实 (AR) 应用程序的兴趣正在激增。就在上个月，Pokémon Go 成为有史以来最大的手机游戏，这必将激发人们对 VR 和 AR 应用程序的更多兴趣，这些应用程序不仅可以用于游戏和娱乐，还可以用于教育和科学。虽然 VR 和 AR 应...