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In sections ref(NEWARRAY), ref(DELETEARRAY) and ref(DELETEPTRS)
tt(operator new[]) and tt(operator delete[]) were introduced. Like
tt(operator new) and tt(operator delete) the
operators tt(new[]) and tt(delete[]) may be overloaded.
As it is possible to overload tt(new[]) and tt(delete[]) as well as
tt(operator new) and tt(operator delete), one should be careful in selecting
the appropriate set of operators. The following i(rule of thumb) should always
be applied:
quote(If tt(new) is used to i(allocate memory), tt(delete) should be used
to i(deallocate memory). If tt(new[]) is used to allocate memory,
tt(delete[]) should be used to deallocate memory.)
By default these operators act as follows:
itemization(
itt(operator new) is used to allocate a single object or
primitive value. With an object, the object's constructor is
called.
itt(operator delete) is used to return the memory allocated by tt(operator
new). Again, with class-type objects, the class's destructor is
called.
itt(operator new[]) is used to allocate a series of primitive values or
objects. If a series of objects is allocated, the class's default constructor
is called to initialize each object individually.
itt(operator delete[]) is used to delete the memory previously allocated
by tt(new[]). em(If) objects were previously allocated, then the destructor
is called for each individual object. Be careful, though, when pointers to
objects were allocated. If hi(pointer to objects)
em(pointers to objects) were allocated the destructors of the objects to
which the allocated pointers point won't automatically be called. A pointer is
a primitive type and so no further action is taken when it is returned to the
common pool.
)
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