大约有 7,000 项符合查询结果（耗时：0.0316秒） [XML]
深入理解 x86/x64 的中断体系 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...[0x29]=64-Bit Interrupt Gate target=0x0010:fffff80003bf2290, DPL=0
IDT[0x2a]=64-Bit Interrupt Gate target=0x0010:fffff80003bf22a0, DPL=0
IDT[0x2b]=64-Bit Interrupt Gate target=0x0010:fffff80003bf22b0, DPL=0
IDT[0x2c]=64-Bit Interrupt Gate target=0x0010:fffff80003abca00, DPL=3
IDT[0x2d]=64-Bi...
How to make shallow git submodules?
... I'm getting fatal: reference is not a tree: 88fb67b07621dfed054d8d75fd50672fb26349df for each submodule
– knocte
Jan 20 '14 at 9:12
...
insert vs emplace vs operator[] in c++ map
...maps.)
Here's an example to demonstrate:
#include <vector>
struct foo
{
explicit foo(int);
};
int main()
{
std::vector<foo> v;
v.emplace(v.end(), 10); // Works
//v.insert(v.end(), 10); // Error, not explicit
v.insert(v.end(), foo(10)); // Also works
}
...
How do I check for nulls in an '==' operator overload without infinite recursion?
...
Use ReferenceEquals:
Foo foo1 = null;
Foo foo2 = new Foo();
Assert.IsFalse(foo1 == foo2);
public static bool operator ==(Foo foo1, Foo foo2) {
if (object.ReferenceEquals(null, foo1))
return object.ReferenceEquals(null, foo2);
ret...
Try-finally block prevents StackOverflowError
...(2^N) where N is the maximum stack depth.
Imagine the maximum depth is 5
foo() calls
foo() calls
foo() calls
foo() calls
foo() which fails to call foo()
finally calls
foo() which fails to call foo()
finally
foo() calls
...
How to use C++ in Go
... have inheritance.
Here's an example:
I have a C++ class defined as:
// foo.hpp
class cxxFoo {
public:
int a;
cxxFoo(int _a):a(_a){};
~cxxFoo(){};
void Bar();
};
// foo.cpp
#include <iostream>
#include "foo.hpp"
void
cxxFoo::Bar(void){
std::cout<<this->a<<std::endl...
C# generic type constraint for everything nullable
...
If you are willing to make a runtime check in Foo's constructor rather than having a compile-time check, you can check if the type is not a reference or nullable type, and throw an exception if that's the case.
I realise that only having a runtime check may be unaccepta...
How to create an object for a Django model with a many to many field?
...ginal suggestion. It works, but isn't optimal. (Note: I'm using Bars and a Foo instead of Users and a Sample, but you get the idea).
bar1 = Bar.objects.get(pk=1)
bar2 = Bar.objects.get(pk=2)
foo = Foo()
foo.save()
foo.bars.add(bar1)
foo.bars.add(bar2)
It generates a whopping total of 7 queries:
...
What is the colon operator in Ruby?
...
:foo is a symbol named "foo". Symbols have the distinct feature that any two symbols named the same will be identical:
"foo".equal? "foo" # false
:foo.equal? :foo # true
This makes comparing two symbols really fast (sin...
How to disallow temporaries
For a class Foo, is there a way to disallow constructing it without giving it a name?
10 Answers
...