[lolinder]

Rust's deep immutability is different than most in that it allows setting a reference as recursively immutable even if the data type it's pointing to has mutable fields.

Scala gives you immutable data types but unless I'm mistaken there's no way to say "recursively disable mutating functions for all elements in this list"—you just have a list that cannot be mutated. If you stick a Java object in a Scala list, it's liable to mutate, so Scala has shallow immutability.

[danmur]

Yeah that's true, it is different. Neat :). With Scala you would put immutable types in your list if you wanted to, but I get what you mean, it's not the same.