prefer-nth

Prefer nth over drop followed by first

Calling first after drop builds an adapter solely to consume its first value.
Instead, you SHOULD use nth to skip preceding values and return the selected value.

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

Reported

import { Iterator } from "destack:iter";

function select(values: Iterator<int32>, index: isize): int32 | undefined {
    return values.drop(index).first();
}
Accepted

import { Iterator } from "destack:iter";

function select(values: Iterator<int32>, index: isize): int32 | undefined {
    return values.nth(index);
}
Prior art

- Clippy · iterskipnext

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