templating vs pointers, array object vs primitive storage, and the glory of STL vectors in C++

This post shall be rather short in its nature as it is already past due and I am still trying to finish up my workload that I had on my “break”. Two weeks ago in OOP we took some time to observe the nuances of array initialization with a high point being demonstrated by quiz 20, namely showing that an array of type A instantiated with Bs would create the invocation pattern: B constructor, A constructor, A copy Constructor, B destructor and lastly when the Array exited the function scope of invocation A destructor would be called.We also looked at templating examples and pointers. The high point there being that templating allowed for more types of iterators than pointers, but that some iterators imposed restrictions on the order in which their functions were called, namely the read iterator, and the * and == operators. We also briefly discussed why the STL was nice, and the fact that vectors are similar but much faster than java ArrayLists. The high points being attempt to use STL or Boost to save some troubles and a reference to the fact that C++ vectors subscript([]) operator did not suffer from the linear time look-up like java’s List interface does, however there is some overhead on the .at operator.



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