Curriculum Foundations Functions & multi-return exercise 6 · fill-word
Functions & multi-return
Exercise 3 covered the (T, error) return-tuple convention by
recognition. Now produce it: fill in the value type and the error
type that complete the tuple.
TypeScript reference
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About this theme
Functions look familiar — func name(args) returnType { ... } — with one big new idea: multiple return values. Go functions can return a tuple, and the convention for "this might fail" is to return (result, error). We'll meet error properly in a later module, but the *shape* arrives here.