大约有 30,000 项符合查询结果（耗时：0.0507秒） [XML]
How do I prevent site scraping? [closed]
...g well.
There's various types of scraper, and each works differently:
Spiders, such as Google's bot or website copiers like HTtrack, which recursively follow links to other pages in order to get data. These are sometimes used for targeted scraping to get specific data, often in combination with a...
Static Vs. Dynamic Binding in Java
...e is vehicle but object will be Car
vehicle.start(); //Car's start called because start() is overridden method
}
}
class Vehicle {
public void start() {
System.out.println("Inside start method of Vehicle");
}
}
class Car extends Vehicle {
@Override
public void s...
What's the _ underscore representative of in Swift References?
...ing, s2: String) -> String {
return s1 + s2;
}
}
When you call foo(), it is called like bar.foo("Hello", s2: "World").
But, you can override this behavior by using _ in front of s2 where it's declared.
func foo(s1: String, _ s2: String) -> String{
return s1 + s2;
}
Then, ...
How exactly does __attribute__((constructor)) work?
...
It runs when a shared library is loaded, typically during program startup.
That's how all GCC attributes are; presumably to distinguish them from function calls.
GCC-specific syntax.
Yes, this works in C and C++.
No, the function does not need to be static.
The destruct...
Disabled form inputs do not appear in the request
...ielson317 You can keep the select element "disabled" but also add another hidden input with the same value.
– AlphaMale
May 5 '15 at 3:34
1
...
How do I expire a PHP session after 30 minutes?
... collector is only started with a probability of session.gc_probability divided by session.gc_divisor. And using the default values for those options (1 and 100 respectively), the chance is only at 1%.
Well, you could simply adjust these values so that the garbage collector is started more often. B...
Call PowerShell script PS1 from another PS1 script inside Powershell ISE
I want call execution for a myScript1.ps1 script inside a second myScript2.ps1 script inside Powershell ISE.
11 Answers
...
Return a value from AsyncTask in Android [duplicate]
...
Why not call a method that handles the value?
public class MyClass extends Activity {
private class myTask extends AsyncTask<Void, Void, Void> {
//initiate vars
public myTask() {
super();
...
Calling a function from a string in C#
I know in php you are able to make a call like:
7 Answers
7
...
Why should I declare a virtual destructor for an abstract class in C++?
.... When they come to delete it, if the destructor is non-virtual, they will call the interface's destructor (or the compiler-provided default, if you didn't specify one), not the derived class's destructor. Instant memory leak.
For example
class Interface
{
virtual void doSomething() = 0;
};
cl...