While some functions in the Stream module may return the `Stream` struct, you must never explicitly check for the `Stream` struct, as streams may come in several shapes, such as `IO.Stream`, `File.Stream`, or even `Range`s.
The functions in the Stream module only guarantee to return enumerables and their implementation (structs, anonymous functions, etc) may change at any time. For example, a function that returns an anonymous function today may return a struct in future releases. Instead of checking for a particular type, you must instead write assertive code that assumes you have an enumerable, using the functions in the `Enume` or `Stream` module accordingly. -- You received this message because you are subscribed to the Google Groups "elixir-lang-core" group. To unsubscribe from this group and stop receiving emails from it, send an email to elixir-lang-core+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/elixir-lang-core/CAGnRm4J2oazhCW%2BPrZ-4xtD-7AWZ5890Yd1PVqk0b9KfN3-wmw%40mail.gmail.com.
