• Variables in functions within local workspace, which is separated from base workspace
• Performance is more like pass by value
• A function file contains one primary function and several sub-functions, primary functions can be called from outside, sub-functions are visible only to the functions inside the function file that defines them
• Private functions are saved in "private" folder; all private functions are only visible to the functions in the parent folder

function [a, b] = change(a, b)
    nargin % number of input parameters
    a = a+1;
    b = b+1;
    nargout % number of output parameters
end
			

function test()
    a = 1; b = 10;
    [c, d] = change(a, b);
    a
    b
    c
    d
end
		

power = @(x, n) x.^n
a = 1:10
b = power(a, 2)
		

• tutorialspoint.com