prefer-unary-negation

Prefer unary negation over multiplying or dividing by -1

Multiplying or dividing a builtin numeric value by negative one performs the same operation as unary negation.
Instead, you SHOULD negate the value directly.

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

Reported

function negate(value: int32): int32 {
    return value * -1;
}
Accepted

function negate(value: int32): int32 {
    return -value;
}
Prior art

- Clippy · negmultiply
- eslint-plugin-unicorn · prefer-unary-minus

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