My biggest problem with TOML is absence of `null` values. Null is fundamental in describing missing or undefined values. Especially problematic are (numeric) ar

My biggest problem with TOML is absence of `null` values. Null is fundamental in describing missing or undefined values. Especially problematic are (numeric) arrays with missing values. JSON has null as the first-class object. In TOML world the recommended work-around is to use empty key-value object `{}` in place of a null. Kind of a hack. Makes replacing JSON with TOML tricky. EDIT: typos