What is the meaning of the following folder names in MATLAB?
@folder+folderI've created a class Tata.m which uses the classdef syntax.
Should I put it in an @folder or a +folder?
I've looked at the documentation but it is not really clear
in which cases the @folder should be used and in which cases the +folder should be used.
The +folder piece is a MATLAB package folder. If you place Tata.m in a location like +folder/Tata.m, it will be known to MATLAB as the class folder.Tata. If you place it in a folder like someOtherFolder/Tata.m, or someOtherFolder/@Tata/Tata.m, it will be known to MATLAB as Tata.
It can be useful to place a classdef file in a class directory like @Tata to allow you to put the definition of some (or all) methods in separate files.
The doc has more details.
EDIT: To attempt to clarify the @ directories: historically, a class Tata with methods methodOne and methodTwo would require the following files:
somePlaceOnThePath/@Tata/Tata.m
somePlaceOnThePath/@Tata/methodOne.m
somePlaceOnThePath/@Tata/methodTwo.m
In the "new" object system, you can still use the layout above without modification. At the other extreme, you can place the entire implementation of Tata in a single classdef block in:
somePlaceOnThePath/Tata.m
If you have some large methods, or want to split up the implementation of the class Tata into several files to make parallel development simpler, you can take use a classdef like this:
%# somePlaceOnThePath/@Tata/Tata.m:
classdef Tata
methods
result = methodTwo(obj, arg)
function methodOne(obj)
disp('hello from methodOne');
end
end
end
And also
%# somePlaceOnThePath/@Tata/methodTwo.m:
function result = methodTwo(obj, arg)
% do stuff with obj and arg
end
Strictly speaking, the advance declaration of methodTwo in the classdef