containers:
- list.h (expect sort for list)
- vector.h (almost)
iterator:
- iterator.h
- type_traits.h (use <type_traits>)
allocator:
- allocator.h
- construct.h
- memory.h (basic impl of unique_ptr)
- uninitialized.h
algorithm:
- algo.h (half)
- algobase.h (half)
others:
- utility.h (pair...)