Racket

Why Racket doesn't have a uniform collection interface? It's fucking stupid to have string-ref, vector-ref, list-ref etc in the language.

>>7
You may want your code to be data-structure specific, and because of stream-ref returning two values when applied to an hash (they could just return a cons with (key . value)).
The non-polymorphic ``ref'' (that simply doesn't exist), length, map, etc are inherited from old Lisps, and freshmen in CL often wonder why they are not defined as generics.

However, you could just define your module/#lang that exports them as the stream-* variants and use it.