[Defletter]

This is honestly a pretty perfect example of why criticising programming languages can be so frustrating: people are completely unwilling to meet you where you're at. You're response here is to say that of course while-let does that, because that's what while-let does, that's how while-let looks. I'm not being critical of Rust having pattern matching as the while-loop condition, but of how this is expressed in code, specifically with how it looks exactly like an ordinary variable definition, but doesn't at all function like one, and how that can be confusing to a non-zero amount of people. That's the extent of my complaint. I'm ganna go now.