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One way to dynamically allocate memory, is using new followed by the name of a type.
new Person
By default, memory allocated with new with be zero-initialized. If this is undesired, you can insert undef after the new keyword in order to leave the allocated memory undefined.
new undef Person
For allocating blocks of memory of a certain type, a count can be specified by appending * followed by a value containing the number of elements desired.
new int * 10
new float * (num_vertices * 3)
The difference between new and malloc(), is that new will zero-initialize the allocated memory by default.
To easily create a heap-allocated C-String, you can use new followed by a C-String literal.
new 'Hello World'
The resulting value will be a *ubyte which points to the newly allocated and initialized C-String.
You can optionally use malloc()/free() instead of new/delete
See here for more information