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Purpose of ESI & EDI registers?
...
In addition to the string operations (MOVS/INS/STOS/CMPS/SCASB/W/D/Q etc.) mentioned in the other answers, I wanted to add that there are also more "modern" x86 assembly instructions that implicitly use at least EDI/RDI:
The SSE2 MASKMOVDQU (and the upcoming AVX VMASKMOVDQU) instruction sele...
How to overload the operator++ in two different ways for postfix a++ and prefix ++a?
...ill search for a fonction to handle ++t ; or t++ ; code:
class T
{
// etc.
} ;
T & operator++(T & p_oRight) // ++A
{
// Do increment of p_oRight value
return p_oRight ;
}
T operator++(T & p_oRight, int) // A++
{
T oCopy ;
// Copy p_oRight into oCopy
// Do increment...
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 ...
How to limit setAccessible to only “legitimate” uses?
... direct bytecode manipulation). They could run your code in their own JVM, etc. In this case worrying will do you no good.
If you're writing a web-application that only interfaces with people and systems via HTTP and you control the application server, it's also not a concern. Sure the fellow coder...
C# Events and Thread Safety
...to compare this with the cost of repainting parts of a screen in Winforms, etc., so it becomes even more invisible in the deluge of real CPU work and waiting around for resources. You get +1 from me for the hard work, anyway. :)
– Daniel Earwicker
May 11 '09 at...
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...
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
...
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...
__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...
“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...