Honestly ChatGPT-4 sucks at writing code (if similar code isn't in its corpus of knowledge).

I asked it to write a YAML parser in pure Rust. The first thing it did was write this:

    pub enum YamlNode {
       Scalar(String),
       Sequence(Vec<YamlNode>),
       Map(HashMap<String, YamlNode>),
    }

This is what I expect a freshman in college to write as their first Yaml parser.

Literally unusable as a starting point.

I did try to correct it but it tripped up and somehow managed to fuck that up to.