Immutable Streams

[boisgera]

Streams without read, write, save and restore. Study the use cases (I am think of streams as keys in dict, but is it usable without even a read?). Maybe via a stream.copy(freeze=true) API? And/or a new constructor? Name of the new class? Would be in the hierarchy of the "normal" stream right? Unless they have a common base class that actually implements 100% of the ImmutableBitStream (find a better name) APi. Now you would still have copy() to create a mutable version from an immutable one.