这是我的代码示例:
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;
}
}
我的问题是,这是一种安全的方法吗?我是否在某些情况下犯了一些隐藏的错误?它适用于每种类型的对象(POD 和非 POD)吗?