[Proposal] Set literals

[James_Dempsey]

@crontab

@James_Dempsey

I think with the proposed syntax it would be very easy to miss the colon when reading the code and accidentally mistake a set for an array:

let daysOfWeek = :[“Monday”, “Tuesday”, “Wednesday”]
let daysOfWeek = [“Monday”, “Tuesday”, “Wednesday”]

Certain things in C-like syntax may be easy to miss, e.g. ! in expressions. In fact I'd argue that the case of :[...] is a less visually ambiguous one compared to the ! operator.

Yes and for years there has been a steady stream of forum threads by people who find the ! operator easy to miss, pitching various solutions. The current one is here.

Why would it be a good thing to proactively introduce a new easy-to-miss syntax?