OTOH when you call slice::from_raw_parts, Rust allocates a new fat pointer that contains the null pointer and the zero length, then Box::from_raw stores a reference to this fat pointer in the Box. When dropping the box, Rust first drops the slice (which knows tha...
When a compiler emits code to call an unknown non-inline function, it has to assume that function modifies any/all global variables and any memory it might possibly have a pointer to. i.e. everything except locals that haven't had their address escape have to be in sync in ...
I found a weird quirk where something that should work doesn't work as expected in a surprising way. This problem also (or primarily) appears with byrow. This formula results in the following results: =LET( many, LAMBDA(choice, CHOOSE(choice + 1, 10, "b", "harry", ...
I found a weird quirk where something that should work doesn't work as expected in a surprising way. This problem also (or primarily) appears with byrow. This formula results in the following results: =LET( many, LAMBDA(choice, CHOOSE(choice + 1, 10, "b", "harry", "c", SEQU...
Why the void pointer passed to testb doesn't continue pointing to the allocated integer after the function call returns. Code: #include <stdio.h> #include <iostream> void* testa() { return new int(1); [Code] ... View 5 RepliesView Related C...
Miss Miller taught physics in a London school. Last week she was explaining to one of her classes about sound, and she decided to let them see how successful she had been in her work. She said to them,“Now I have a sister in Washington. If I was calling her on...
1. When does _CrtIsValidHeapPointer-assertion fire?There are some of the most usual scenarios:A. Pointer doesn't point to a memory from the heap to begin with:char *mem = "not on the heap!"; free(mem); here the literal isn't stored on the heap and thus can/sho...
I've searched, and came uponThe Rule of Three, but I don't understand what operator is used when setting a pointer like this: Actor other =Actor(); Actor* ptr = &other; I think it is the copy constructor, but how do I implement it for my program?
I found a weird quirk where something that should work doesn't work as expected in a surprising way. This problem also (or primarily) appears with byrow. This formula results in the following results: =LET( many, LAMBDA(choice, CHOOSE(choice + 1, 10, "b", "harry", "c", SEQU...
I found a weird quirk where something that should work doesn't work as expected in a surprising way. This problem also (or primarily) appears with byrow. This formula results in the following results: =LET( many, LAMBDA(choice, CHOOSE(choice + 1, 10, "b", "harry", "c", SEQU...