Bottom / Error
Specifying duplicate fields with conflicting values results in an error
Bottom is a special value in CUE, denoted
_|_, that indicates an
error such as conflicting values.
Any error in CUE results in
Logically all errors are equal, although errors may be associated with
metadata such as an error message.
Note that an error is different from
null is a valid value,
_|_ is not.
list: [0, 1, 2] a: _|_ // conflicting values 4 and 5 l: [1, _|_, // conflicting values 2 and 3 ] val: _|_ // index 3 out of bounds