大约有 40,000 项符合查询结果（耗时：0.0379秒） [XML]
System.Threading.Timer in C# it seems to be not working. It runs very fast every 3 second
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232
This is not the correct usage of the System.Threading.Timer. When you instantiate the Timer, yo...
What is a C++ delegate?
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J.N.J.N.
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2
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What does && mean in void *p = &&abc;
...M and it has access to the entire RAM (that is, 0x00000000-0xFFFFFFFF on a 32-bit machine).
(the above is just a short overwiew of what's happenning, you really need to learn assembly to understand it fully, so bear with me)
Now, the label in a source code is basically an address. "goto label;" does...
string.Join on a List or other type
...s.
– Alex Humphrey
Aug 31 '10 at 16:32
2
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How Big can a Python List Get?
...ZE_T_MAX is defined in pyport.h to be ((size_t) -1)>>1
On a regular 32bit system, this is (4294967295 / 2) / 4 or 536870912.
Therefore the maximum size of a python list on a 32 bit system is 536,870,912 elements.
As long as the number of elements you have is equal or below this, all list ...
Templated check for the existence of a class member function?
...truct Generic {};
// SFINAE test
template <typename T>
class has_helloworld
{
typedef char one;
struct two { char x[2]; };
template <typename C> static one test( decltype(&C::helloworld) ) ;
template <typename C> static two test(...);
public:
enum...
How can I do test setup using the testing package in Go
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– James Henstridge
May 19 '14 at 8:32
Well @james, I have shown one thought on way to answer the issue and others hav...
Why is it impossible to override a getter-only property and add a setter? [closed]
... derivation, my code may break. e.g.
public class BarProvider
{ BaseClass _source;
Bar _currentBar;
public void setSource(BaseClass b)
{
_source = b;
_currentBar = b.Bar;
}
public Bar getBar()
{ return _currentBar; }
}
Since Bar cannot be set as per the BaseClass interface,...
Variable number of arguments in C++?
...number of arguments in C you include stdarg.h. From that you'll get the va_list type as well as three functions that operate on it called va_start(), va_arg() and va_end().
#include<stdarg.h>
int maxof(int n_args, ...)
{
va_list ap;
va_start(ap, n_args);
int max = va_arg(ap, int...
How do I remove code duplication between similar const and non-const member functions?
...& get() const {
return c;
}
char & get() {
return const_cast<char &>(static_cast<const C &>(*this).get());
}
char c;
};
The two casts and function call may be ugly but it's correct. Meyers has a thorough explanation why.
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