Swift has: Strong References Weak References Unowned References How is an unowned reference different from a weak reference? When is it safe to use an unowned reference? Are unowned...
A simple test app: cout << new int...
What is the difference between new/delete and malloc/free? Related (duplicate?): In what cases do I use malloc vs new? 15 Answers 15
I want to know how malloc and free work. int main() { unsigned char *p = (unsigned char*)malloc(4*sizeof(unsigned char)); memset(p,0,4); strcpy((char*)p,"abcdabcd"); // **deliberately storing 8bytes** cout << p; free(p);...
When you create an instance of a class with the new operator, memory gets allocated on the heap. When you create an instance of a struct with the new...
I have a disk drive where the inode usage is 100% (using df -i command). However after deleting files substantially, the usage remains 100%. What’s the correct way to...
Is it safe to delete a NULL pointer? And is it a good coding style? 8 Answers 8
This question already has answers here: Fatal Error: Allowed Memory Size of 134217728 Bytes Exhausted (CodeIgniter + XML-RPC) (32 answers) Closed 2 months ago. This error message is being...
How do I check if pytorch is using the GPU? It’s possible to detect with nvidia-smi if there is any activity from the GPU during the process, but I...
Is there a way for a Python program to determine how much memory it’s currently using? I’ve seen discussions about memory usage for a single object, but what I...