Is MATLAB OOP slow or am I doing something wrong?

Question

I\'m experimenting with MATLAB OOP, as a start I mimicked my C++\'s Logger classes and I\'m putting all my string helper functions in a String class, thinking it would be gr

Answer 1

Actually no problem with your code but it is a problem with Matlab. I think in it is a kind of playing around to look like. It is nothing than overhead to compile the class code. I have done the test with simple class point (once as handle) and the other (once as value class)

    classdef Pointh < handle
    properties
       X
       Y
    end  
    methods        
        function p = Pointh (x,y)
            p.X = x;
            p.Y = y;
        end        
        function  d = dist(p,p1)
            d = (p.X - p1.X)^2 + (p.Y - p1.Y)^2 ;
        end

    end
end

here is the test

%handle points 
ph = Pointh(1,2);
ph1 = Pointh(2,3);

%values  points 
p = Pointh(1,2);
p1 = Pointh(2,3);

% vector points
pa1 = [1 2 ];
pa2 = [2 3 ];

%Structur points 
Ps.X = 1;
Ps.Y = 2;
ps1.X = 2;
ps1.Y = 3;

N = 1000000;

tic
for i =1:N
    ph.dist(ph1);
end
t1 = toc

tic
for i =1:N
    p.dist(p1);
end
t2 = toc

tic
for i =1:N
    norm(pa1-pa2)^2;
end
t3 = toc

tic
for i =1:N
    (Ps.X-ps1.X)^2+(Ps.Y-ps1.Y)^2;
end
t4 = toc

The results t1 =

12.0212 % Handle

t2 =

12.0042 % value

t3 =

0.5489  % vector

t4 =

0.0707 % structure 

Therefore for efficient performance avoid using OOP instead structure is good choice to group variables