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multiple definition of template specialization when using different objects
When I use a specialized template in different object files, I get a "multiple definition" error when linking. The only solution I found involves using the "inline" function, but it just seems like some workaround. How do I solve that without using the "inline" keyword? If that's not possible, why?
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Convert data.frame column format from character to factor
I would like to change the format (class) of some columns of my data.frame object ( mydf ) from charactor to factor .
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CSS Progress Circle [closed]
I have searched this website to find progress bars, but the ones I have been able to found show animated circles that go to the full 100%.
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Why is volatile needed in C?
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Volatile tells the compiler not to optimize anything that has to do with the volatile variable.
There are at least three common reasons to use it, all involving situations where the value of the variable can change without action from the visible code: When you interfac...
c++11 Return value optimization or move? [duplicate]
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Use exclusively the first method:
Foo f()
{
Foo result;
mangle(result);
return result;
}
This will already allow the use of the move constructor, if one is available. In fact, a local variable can bind to an rvalue reference in a return statement precisely when copy elision is al...
How to determine if binary tree is balanced?
It's been a while from those school years. Got a job as IT specialist at a hospital. Trying to move to do some actual programming now. I'm working on binary trees now, and I was wondering what would be the best way to determine if the tree is height-balanced.
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Determining 32 vs 64 bit in C++
I'm looking for a way to reliably determine whether C++ code is being compiled in 32 vs 64 bit. We've come up with what we think is a reasonable solution using macros, but was curious to know if people could think of cases where this might fail or if there is a better way to do this. Please note we ...
`from … import` vs `import .` [duplicate]
I'm wondering if there's any difference between the code fragment
6 Answers
6
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What is a StackOverflowError?
...s at the bottom end of your process. As you allocate memory, this heap can grow towards the upper end of your address space. As you can see, there is a potential for the heap to "collide" with the stack (a bit like tectonic plates!!!).
The common cause for a stack overflow is a bad recursive call. ...
What is the difference between Fragment and FragmentActivity?
...obvious inheritance differences, what are the main differences between Fragment and FragmentActivity ? To what scenarios are each class best suited? I'm trying to get an understanding of why both of these classes exist...
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