What would you like to see in Elixir 2?

[josevalim]

@mbuhot

no more dot-call syntax for lambdas - it’s unfamiliar to newcomers.

It has been discussed previously on why removing it is very dangerous and confusing to Elixir variable and function namespaces. Hopefully someone can find a link to some of those discussions.

@mbuhot

removal of the Elixir. prefix on module names - this makes calling into Elixir from other beam languages feel second class.

There are case insensitive file systems, which means that, if we remove the Elixir. prefix, then a User module will conflict with the user module in Erlang. The same for IO and io, etc.

@mbuhot

Type parameters for Enumerable.t so that the collection element type is better documented.

Great idea! No need to wait for 2.0 though, should be done now. I think there is even an open issue.

@mbuhot

A pipe operator that plays nicely with lambdas (like F#, Elm, etc)

Unfortunately very hard to do efficiently without currying and without static type checking to eliminate intermediate lambdas.

@he9lin

Algebraic data type support. This is very important to me.

With tuples and atoms, you do have sum types and product types, which are the foundation of algebraic data types. We don’t have type checked algebraic data types though.