Chapter24 (v21) Concrete immutable collection classes: Immutable stacks
Chapter24 (v22) Concrete immutable collection classes: Immutable queues
Chapter24 (v23) Concrete immutable collection classes: Ranges
Chapter24 (v24) Concrete immutable collection classes: Hash tries
Chapter24 (v25) Concrete immutable collection classes: Red-black trees
Chapter24 (v26) Concrete immutable collection classes: Immutable bit sets
Chapter24 (v27) Concrete immutable collection classes: List maps
Chapter24 (v28) Concrete mutable collection classes: Array buffers
Chapter24 (v29) Concrete mutable collection classes: List buffers
Chapter24 (v30) Concrete mutable collection classes: String builders
Chapter24 (v31) Concrete mutable collection classes: Linked lists