safe placement new & explicit destructor call

Posted by uray on Stack Overflow See other posts from Stack Overflow or by uray
Published on 2010-06-07T23:38:49Z Indexed on 2010/06/07 23:42 UTC
Read the original article Hit count: 285

this is an example of my codes:

`

template <typename T> struct MyStruct {
    T object;
}

template <typename T> class MyClass {
    MyStruct<T>* structPool;
    size_t structCount;

    MyClass(size_t count) {
        this->structCount = count;
        this->structPool  = new MyStruct<T>[count];
        for( size_t i=0 ; i<count ; i++ ) {
            //placement new to call constructor
            new (&this->structPool[i].object) T(); 
        }
    }

    ~MyClass() {
        for( size_t i=0 ; i<this->structCount ; i++ ) {
            //explicit destructor call
            this->structPool[i].object.~T(); 
        }
        delete[] this->structPool;
    }
}

`

my question is, is this a safe way to do? do I make some hidden mistake at some condition? will it work for every type of object (POD and non-POD) ?

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