How do I clear a vector in C++?
An example of an AI chatbot conversation about clearing a vector in C++.
How do I clear a vector in C++?
You can clear a vector in C++ using the clear() method. For example: myVector.clear();.
What happens to the memory after clearing a vector?
After calling clear(), the vector's size becomes zero, but the capacity remains unchanged. It doesn't free the memory.
Is there a way to completely free the memory used by the vector?
Yes, you can use swap() with an empty vector to release the memory: std::vector<Type>().swap(myVector);.
Can I use resize(0) instead of clear()?
Yes, resize(0) will also clear the vector, but it may not be as efficient as clear().
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