prefer-slice-parameter

Prefer slice parameters over borrowed arrays

A borrowed array parameter requires callers to provide one specific owned collection when a contiguous view is sufficient.
Instead, you SHOULD accept a borrowed slice so arrays, slices, and other contiguous storage can be passed directly.

- Category: performance
- Level: warning
- Fix: suggestion
- Scope: module

Reported

function first(values: &readonly int32[]): int32 {
    return values[0];
}
Accepted

function first(values: &readonly [int32]): int32 {
    return values[0];
}
Prior art

- Clippy · ptrarg

language/linter/src/rules/performance/prefersliceparameter.rs:12