https://doc.rust-lang.org/std/iter/trait.FromIterator.html
FromIterator in std::iter - Rust
Conversion from an `Iterator`.
fromiteratorstdrust
https://doc.akka.io/libraries/akka-core/current/stream/operators/Source/fromIterator.html
Source.fromIterator • Akka core
Akka is a toolkit for building highly concurrent, distributed, and resilient message-driven applications for Java and Scala.
akka coresourcefromiterator