Problem 1689. Determine which fields have been modified in a structure

Given two input structures (s1, s2), determine which field values have been modified in s2 compared to s1. Your output should be a cell array of appropriate fieldnames and a cell array of the corresponding s2 field values. If s1 and s2 are identical (i.e. no values have been changed), return [] for both outputs.

Example

Suppose

s1.foo = 1;
s1.bar = 2;
s1.baz = 3;

and

s2.foo = 1;
s2.bar = 0;
s2.baz = 3;

then the correct output is

f = {'bar'}
v = {0}

Assumptions

• Inputs are scalar structures
• Inputs have identical fieldnames
• Field values can be numeric arrays, strings, or cell arrays
• The ith cell in output f corresponds to the ith cell in output v