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Why Large Object Heap and why do we care?
...sn't just make memory usage more efficient (no unused holes), it makes the CPU cache much more efficient. The cache is a really big deal on modern processors, they are an easy order of magnitude faster than the memory bus.
Compacting is done simply by copying bytes. That however takes time. The ...
JOIN queries vs multiple queries
...ow table. Basically looked like:
$id = mt_rand(1, 50000);
$row = $db->fetchOne("SELECT * FROM table1 WHERE id = " . $id);
$row = $db->fetchOne("SELECT * FROM table2 WHERE other_id = " . $row['other_id']);
vs
$id = mt_rand(1, 50000);
$db->fetchOne("SELECT table1.*, table2.*
FROM tabl...
[精华] VC中BSTR、Char和CString类型的转换 - C/C++ - 清泛网 - 专注C/C++及内核技术
...配和释放。
5．下面介绍一种比较复杂的情况，利于对问题的深入理解。例如我们现在用到的ICF底层库就有很多类似下面的函数：
void CTestDlg::GetString(BSTR* state)
{
_bstr_t m_state(L"cc");
*state = m_state.copy();
}
其中_bstr_...
What is the most efficient Java Collections library? [closed]
...lar collections (with helpers like the Lists class) and then use Iterables etc when I need to. Use the complexity only when it helps you.
– Jon Skeet
Mar 10 '09 at 12:30
10
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Objective-C implicit conversion loses integer precision 'NSUInteger' (aka 'unsigned long') to 'int'
...canf : NO"
Explanation : [How it works]
Check calls to printf and scanf, etc., to make sure that the arguments supplied have types appropriate to the format string specified, and that the conversions specified in the format string make sense.
Hope it work
Other warning
objective c implicit con...
“Insufficient Storage Available” even there is lot of free space in device memory
... things you will only cause issues down the road.. lagg, error
messages, etc. (because you are fooling the OS in thinking you have
given it additional memory which in fact you did.. you only force
closed).
Another good explanation of what is happening is in forum post Low Internal Memory.
T...
parseInt vs unary plus, when to use which?
...erested in catching email input instead of userId, value omitted entirely, etc.), whereas parseInt is too liberal.
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__attribute__ - C/C++ - 清泛网 - 专注C/C++及内核技术
...了！
加上__attribute__((noreturn))则可以很好的处理类似这种问题。把
extern void myexit();修改为：
extern void myexit() __attribute__((noreturn));之后，编译不会再出现警告信息。
__attribute__ const
该属性只能用于带有数值类型参数的函数上...
How do I declare a 2d array in C++ using new?
...tiguous block is the way to go (less impact on allocator, better locality, etc). But you don't have to sacrifice clean subscripting. See stackoverflow.com/a/29375830/103167
– Ben Voigt
Mar 31 '15 at 19:43
...
Add native files from NuGet package to project output directory
...
a bit drastic to rename the files etc just because of the warning.
– user3638471
Oct 31 '16 at 23:27
...