A way to exit out of a function in the code while it is running?

I have a function that runs and resets a variable with respect to a few different things, once this variable is set as a string and not a number which it originally is, i wish to exit the function and not carry on to reset the variable further on, is there a way to do this?

Either a condition to end once that variable is set as a string or a break within the code? Or maybe another command that would stop the function and output the variable there.

Cheers for the help!

Answer 1

[Adam]

if ischar( varname )
    return;
end

[Luke]

Will 'return;' end the function at a specific step if i enter it in there?

[Michael Haderlein]

return will stop the function and immediately go back to the invoking function, i.e. the function which called the one which is stopped.

break will jump to the end of the loop and proceed with the current function.