大约有 40,000 项符合查询结果（耗时：0.0810秒） [XML]
Declaring an enum within a class
...uct Color
{
enum Type
{
Red, Green, Black
};
Type t_;
Color(Type t) : t_(t) {}
operator Type () const {return t_;}
private:
//prevent automatic conversion for any other built-in types such as bool, int, etc
template<typename T>
operator T () const;
};
...
Why does a function with no parameters (compared to the actual function definition) compile?
...
All the other answers are correct, but just for completion
A function is declared in the following manner:
return-type function-name(parameter-list,...) { body... }
return-type is the variable type that the funct...
How Can I Set the Default Value of a Timestamp Column to the Current Timestamp with Laravel Migratio
...r considered a valid date. As documented at the Laravel 5.2 upgrade guide, all timestamp columns should receive a valid default value when you insert records into your database. You may use the useCurrent() column modifier (from Laravel 5.1.25 and above) in your migrations to default the timestamp ...
Why is Everyone Choosing JSON Over XML for jQuery? [closed]
...ng over to JSON . Even Microsoft has integrated support for JSON. What is all the hype over JSON?
19 Answers
...
In Maven 2, how do I know from which dependency comes a transitive dependency?
...
This didn't work for me; all I got was errors about unsupported 'legacy' values. Running @David Crow's version (i.e. without the velocity flag) worked fine though.
– Vlad Schnakovszki
Feb 28 '17 at 13:51
...
is it possible to change values of the array when doing foreach in javascript?
...
The callback is passed the element, the index, and the array itself.
arr.forEach(function(part, index, theArray) {
theArray[index] = "hello world";
});
edit — as noted in a comment, the .forEach() function can take a second...
IntelliJ: Never use wildcard imports
...nd every import individually. It makes it easier for people to figure out exactly where classes you're using come from.
Click on the Settings "wrench" icon on the toolbar, open "Imports" under "Code Style", and check the "Use single class import" selection. You can also completely remove entries u...
Count number of occurences for each unique value
...se this, with some slight modification: t(as.data.frame(table(v))[,2]) is exactly what I need, thank you
– gakera
Nov 18 '10 at 13:30
...
Can I call a base class's virtual function if I'm overriding it?
...
The C++ syntax is like this:
class Bar : public Foo {
// ...
void printStuff() {
Foo::printStuff(); // calls base class' function
}
};
share
...
I get exception when using Thread.sleep(x) or wait()
...
You have a lot of reading ahead of you. From compiler errors through exception handling, threading and thread interruptions. But this will do what you want:
try {
Thread.sleep(1000); //1000 milliseconds is one second.
} catch(InterruptedException ex) {
Thread.currentThr...