proposal: Redefine strings.Join() as generic

[FGasper]

Proposal Details

It would be nice if strings.Join could join a slice of any string-like type. So this could work:

type SpecialString string;

mystrs := []SpecialString{"foo", "bar"}

joined := strings.Join(mystrs, ",")

… with joined being of type SpecialString.

Thank you for your consideration!

[mateusz834]

Sorry, we cannot change signatures of any existing API (backwards compatibility). See proposal #71183 which might help in such cases.

[FGasper]

(For posterity, in case anyone else is wondering: this would break applications that assign strings.Join to a variable.)