There are a number of ways of doing this ... I think they all involve eval, which makes them problematic. Assuming you have a string str with the function that you want to evaluate, the simplest, but worst answer is:
x = eval(str);
I think I would do something like:
f = function_handle.empty; % I think this helps mlint with the eval
f = eval(['@()', str]);
x = f(); % Note the () is important
This limits the problems that the eval can cause.
