expected

1:11:
  |
1 | f(x) = x +
  |           ^
unexpected end of input
expecting expression or operator

1:18:
  |
1 | g(x) = {? 5 if x =< 5, 6 otherwise ?}
  |                  ^^
unexpected "=<"
expecting "?}", "if", "let", "when", ',', expression, operator, or type annotation