String interpolation revamp: design decisions

[beccadax (Becca Royal-Gordon)]

@ravikandhadai

Hi @beccadax This proposal looks great. Just wondering if it was possible to converge on the choice of closures. Are you planning to use a closure-free design?

I am; the current implementation uses a new AST node instead of a closure. The pitch thread I was talking about, with a draft proposal detailing the design, has since been posted:

[Draft] Fix string interpolation (Swift 5 edition)

Previous thread: String interpolation revamp: design decisions Fix ExpressibleByStringInterpolation String interpolation is a simple and powerful feature for expressing complex, runtime-created strings, but the current version of the ExpressibleByStringInterpolation protocol has been deprecated since Swift 3. We propose a new design which improves its performance, clarity, and efficiency. Work on this has progressed to a stage where we can now discuss the specific design. Please read the dr…