New pattern for `manual_is_variant_and`

[ada4a]

What it does

replace

option.is_none() || option.is_some_and(foo)

with

option.is_none_or(foo)

Inspired by pop-os/cosmic-comp#1946 (comment)

Advantage

• Simplifies the code

Drawbacks

No response

Example

option.is_none() || option.is_some_and(foo)

Could be written as:

option.is_none_or(foo)

Comparison with existing lints

There are no similar lints AFAICT

Additional Context

No response

[ada4a]

@profetia please leave good-first-issues to newcomers..

[azzamsa]

Can I give it a try?

[ada4a]

I mean they have already opened a PR, but I'd still encourage you to try to implement it independently, as a way to practice:)