clear a MATLAB function after an episode

There is a persistent variable in a function and I need to clear it before every episode of deep RL training. How do I achieve this?

The path of the function is

[mdl "/Check if Done/MATLAB Function"]

Thanks

Answer 1

[Julius Muschaweck]

Assuming your function has the name f, you can use clear f; to clear persistent variables within f.

Like here:

function f()
    persistent p
    if isempty(p)
        p = 42;
        fprintf('p was empty, now p == %g\n',p)
    else
        p = p+1;
        fprintf('p == %g\n',p);
    end
end

If you then execute

f();
f();
f();
clear f;
f();
f();

you will get

p was empty, now p == 42
p == 43
p == 44
p was empty, now p == 42
p == 43