Nick Hallstrom (Feb 09 2023 at 20:52): Nick Hallstrom (Feb 09 2023 at 20:52):Is there plan to support expressions in string interpolation? For example, I would expect this to work:
"I have \(Num.toStr(2)) apples"
But I get I was expecting an identifier, like \u(message) or \u(LoremIpsum.text).
Brian Carroll (Feb 09 2023 at 21:02):I believe it's a deliberate choice designed to avoid large expressions in interpolated strings which can be hard to read in other languages.
The idea being that if it doesn't work out well it's easy to relax the rules later. But it's hard to start relaxed and make them stricter later.
Nick Hallstrom (Feb 09 2023 at 21:14):Gotcha, that makes sense. Is there plan to add an ability similar to the Display trait in Rust? Then you could avoid complex expressions but still allow something like "I have \(2) apples".
Brendan Hansknecht (Feb 09 2023 at 22:52):yes
Brendan Hansknecht (Feb 09 2023 at 22:53):It has been discussed a few times and is almost certainly something we want to add in the future
Last updated: Jul 26 2025 at 12:14 UTC