[Solved] std::map operation by value or pointer? [closed]

Question

Will that cause memory leak ?

There are no memory leak in your program, but a compilation error, since there are no operator[] defined for struct B.

Assuming you add to map here:

while(true)
{
    A a;
    a[0] = 0;
    b[inx] = a;
    ++inx;
}

there are no memory leaks. The memory will increase until you use all int numbers, but that’s normal, since they have to be stored somewhere in memory.

Accepted Answer

Will that cause memory leak ?

There are no memory leak in your program, but a compilation error, since there are no operator[] defined for struct B.

Assuming you add to map here:

while(true)
{
    A a;
    a[0] = 0;
    b[inx] = a;
    ++inx;
}

there are no memory leaks. The memory will increase until you use all int numbers, but that’s normal, since they have to be stored somewhere in memory.