Scala Streams — Lazy Sequences

Why it matters

Lazy sequences enable pipeline processing without materialization. Understanding shapes efficient code.

The architecture

LazyList.cons: head + tail. Tail evaluated lazily.

Operations: map, filter, take, fold. Lazy where possible.

How it works end to end

Infinite streams: 'LazyList.from(0)' natural numbers. Take + terminate.

Memoization: elements computed once; cached for reuse.

Memory: holding head can prevent GC of tail.

Views: alternative for one-shot lazy processing.