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Lua简明教程 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...注释
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变量
Lua的数字只有double型，64bits，你不必担心Lua处理浮点数会慢（除非大于100,000,000,000,000），或是会有精度问题。
你可以以如下的方式表示数字，0x开头的16进制和C是很像的。
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How to replace multiple white spaces with one white space
... change to an "all whitespace" requirement, then Split/Join does appear to win. As is so often the case, the devil is in the detail...
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C++ SpinLock 自旋锁的代码实现（全网最简略的方式） - C/C++ - 清泛网 - ...
..._and_set(memory_order_acquire)) {
if ( (spinCount++) == 0 ) {
#ifdef _WIN32
SwitchToThread();
#else
sched_yield();
#endif
}
}
}
void unlock() { f_.clear(memory_order_release); }
};
3、测试代码如下：
SpinLock lck;
thread thd([&]{
cout << "thread lock......
How to import a class from default package
...ulations");
CalculationsInterface api = (CalculationsInterface)calcClass.newInstance();
// Use it
double res = api.GetProgress(10);
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How does the Java 'for each' loop work?
...element of the `fruits` array.
}
So, overall summary:
[nsayer] The following is the longer form of what is happening:
for(Iterator<String> i = someList.iterator(); i.hasNext(); ) {
String item = i.next();
System.out.println(item);
}
Note that if you need to use
i.remove(); in ...
What approaches are available to dummy design-time data in WPF?
...tion needs to be built for x64. As the Visual Studio is still in 2018 a 32-bit process and apparently cannot spin a 64-bit host process for the designer part it cannot use my x64 classes. The really bad thing is that there are no errors to be found in any log I could think of.
So if you stumble upo...
Kill some processes by .exe file name
...
what should be do if above code return Exception (a 32 bit processes cannot access modules of a 64 bit process) ?
– Manish
Aug 31 '13 at 11:29
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How do I get current date/time on the Windows command line in a suitable format for usage in a file/
...
See Windows Batch File (.bat) to get current date in MMDDYYYY format:
@echo off
For /f "tokens=2-4 delims=/ " %%a in ('date /t') do (set mydate=%%c-%%a-%%b)
For /f "tokens=1-2 delims=/:" %%a in ('time /t') do (set mytime=%%a%%b)...
Why Large Object Heap and why do we care?
...the array has more than 1000 elements. That's another optimization for 32-bit code, the large object heap allocator has the special property that it allocates memory at addresses that are aligned to 8, unlike the regular generational allocator that only allocates aligned to 4. That alignment is a ...
Generating a random password in php
...GHIJKLMNOPQRSTUVWXYZ'
) {
$str = '';
$max = mb_strlen($keyspace, '8bit') - 1;
if ($max < 1) {
throw new Exception('$keyspace must be at least two characters long');
}
for ($i = 0; $i < $length; ++$i) {
$str .= $keyspace[random_int(0, $max)];
}
return...