ISUNEMPTYFIELD returns true iff field is present and not empty
Examples
isUnemptyField(struct('a', [], 'b', 2), 'a')
isUnemptyField(struct('a', 11, 'b', 2), 'a')
isUnemptyField(struct('a', 11, 'b', 2), 'c')
TODO
Authors
Mehul Gajwani, Monash University, 2024