Matlab: Accessing hidden parameters in function handles

Question

When an anonymous function is defined in Matlab, it internally stores the variables which is using from the workspace. for example

A=2

f=@(x) x^A

clear A

Now if you call f(2) you get the result 4. If you just print f or convert it to string you will get

@(x)x^A

My question is how to access the internal variable A in the function?

Answer 1

One way is using the functions command.

fa = functions(f);

The output is a structure which includes workspace, a cell array containing a structure containing your variables, in this case:

ws = fa.workspace{1};
ws.A   % returns "2"