no-block-in-condition

Disallow block expressions in conditions and scrutinees

A block expression in a condition or scrutinee interleaves statement execution with control selection.
Instead, you SHOULD use a single expression directly or compute a multi-step value before the construct.

- Category: style
- Level: warning
- Fix: automatic
- Scope: module

Reported

function choose(isReady: boolean): string {
    return do { isReady } ? "ready" : "waiting";
}
Accepted

function choose(isReady: boolean): string {
    return isReady ? "ready" : "waiting";
}
Prior art

- Clippy · blocksinconditions

language/linter/src/rules/style/noblockincondition.rs:8