[Pitch] Introducing do-let-catch for Cleaner Error Handling

[xwu (Xiaodi Wu)]

Have you seen Ben Cohen's pitch?

Pitch: Multi-statement if/switch/do expressions

A follow-on to SE-0380. Keen to hear everyone's thoughts on the alternatives outlined at the end. Available as a PR here. Multi-statement expressions using then Authors: Ben Cohen, Hamish Knight Review Manager: TBD Status: Awaiting Implementation Implementation: available on main via -enable-experimental-feature ThenStatements and -enable-experimental-feature DoExpressions Introduction This proposal introduces a then keyword, for the purpose of determining the value of an if or switch express…