Strings

• Strings are not actually Seqable, but are treated as such in the Clojure implementation

Two suggested fixes:

• hardcode String <: (Seqable Character)
  • need to be careful that (instance? Seqable a) does not infer that a could be a String.
    • this seems unlikely to be a problem
  • this just says: positions we can use (Seqable Character), we can also use String
• make Seqable an alias that includes String
  • this ignores that other Clojure implementations have Seqable as a protocol

Arrays, Java maps and others also have this problem, each being hardcoded to behave as a Seqable.