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Apply TodayYou have a reference to an element in a data structure, which you want to pass to a function. Not the value itself, but the reference. And you don't like to use evil eval constructions. Therefore, you convert the reference into a structure, like liked by Matlab's built-in subsref and subsasgn functions.

For example, to reference the value a(12), you would have to convert '(12)' into

def = type: '()' subs: {[12]}

And to reference a(12).field_b{1,3}{2}((3:4),:).c, you would need to convert '(12).field_b{1,3}{2}((3:4),:).c' into

def(1) = type: '()' subs: {[12]}

def(2) = type: '.' subs: {'field_b'}

def(3) = type: '{}' subs: {[1] [3]}

def(4) = type: '{}' subs: {2}

def(5) = type: '()' subs: {[3 4] ':'}

def(6) = type: '.' subs: {'c'}

The assignment is correct when any sub-structure reference that is accepted by subsref and subsasgn is correctly converted from a string to a valid structure.

Note: Solutions wrapped in (f)eval(c), inline, str2func, regexprep (dynamic regular expressions), etc, are not appreciated.

4 correct solutions
4 incorrect solutions

Last solution submitted on Sep 11, 2013