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When and why JPA entities should implement Serializable interface?
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is that mean entity will be saved in DB with out implementing the serializable interface?
– Hanumantha_3048092
Dec 20 '19 at 6:55
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How to initialize a two-dimensional array in Python?
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For Mike Graham's comment about [foo] * 10: This means that this wouldn't work if you're filling an array with random numbers (evaluates [random.randint(1,2)] * 10 to [1] * 10 or [2] * 10 which means that you get an array of all 1s or 2s, instead of a random array.
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Interfaces — What's the point?
...rast, there would be no clear reference point for what foo.woozle() should mean.
– supercat
Feb 20 '15 at 20:32
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Check if an array is empty or exists
... => true
Case Not an Array
Javascript has a dynamic type system. This means we can't guarantee what type of object a variable holds. There is a chance that we're not talking to an instance of Array.
supposedToBeArray = new SomeObject();
typeof supposedToBeArray.length; // => "undefin...
HTML “overlay” which allows clicks to fall through to elements behind it [duplicate]
...aw arbitrary graphics), and I've come to the point where I can stack it inside of a element on top of everything, but this prevents the user from clicking on any links/buttons/etc.
Is there a way to have its content float on top of everything (it's semi-transparent, so you can still see what is beh...
Why do you use typedef when declaring an enum in C++?
...e real question that was asked which was really about "what does this even mean?"
– BobbyShaftoe
Dec 21 '08 at 22:08
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What exactly is an Assembly in C# or .NET?
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@marc_s: I think you mean a multi-assembly file. It's possible to package multiple assemblies within a single file via studio's command-line tools, but not directly via the IDE.
– Greg D
Sep 1 '09 at 13:15
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What's the difference between assignment operator and copy constructor?
... memory of the assignment constructor and copy constructor?
IDK what you mean by allocate memory in this case, but if you want to see what happens, you can:
class A
{
public :
A(){ cout<<"default constructor"<<endl;};
A(const A& other){ cout<<"copy constructor"<&l...
insert vs emplace vs operator[] in c++ map
...rfect forwarding there is a new way of adding elements into a container by means of emplacing (creating in place). The emplace functions in the different containers do basically the same thing: instead of getting a source from which to copy into the container, the function takes the parameters that ...
Placing an image to the top right corner - CSS
...ent img {
position: absolute;
top: 0px;
right: 0px;
}
<div id="content">
<img src="images/ribbon.png" class="ribbon"/>
<div>some text...</div>
</div>
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