gistfile1.txt

    let lit = [(lambda(s:String): String ref => String().append(s) end, lambda(s:String): String ref => String().append(s) end),
               (lambda(s:String): String ref => String().append(s).append(s) end, lambda(s:String): String ref => String().append(s).append(s) end),
               (lambda(s:String): String ref => String().append(s).append(s).append(s) end, lambda(s:String): String ref => String().append(s).append(s).append(s) end)]

    var result = String()
    for (la, lb) in lit.values() do
      result = result.append(la("a")).append(lb("b"))
    end

gistfile2.txt

Error:
/Users/aturley/development/pony-bugs/types-in-literals/tests.pony:63:9: can't destructure a union using assignment, use pattern matching instead
    for (la, lb) in lit.values() do
        ^
Error:
/Users/aturley/development/pony-bugs/types-in-literals/tests.pony:58:71: right side type: (($1$6 val, $1$7 val) | ($1$8 val, $1$9 val) | ($1$10 val, $1$11 val))
    let lit = [(lambda(s:String): String ref => String().append(s) end, lambda(s:String): String ref => String().append(s) end),