MATLAB: Saving of m-files

mfile save

When I am working on a project, I keep on making some changes in my m-file, so there comes a star(*) near the name of the m.file (which means its not saved). But I make some changes and run the m-file, its gets saved automatically, so I lose the things which I just edited.When I am editing many things I don't remember what all I changed. I know I can use the % symbol to prevent something from getting complied. I think this the new feature of Matlab 2015a. But this was not happening before in 2014a version. I want Matlab to always ask me before it saves anything. Is this possible. If yes, pls tell me the setting how 2 do this? Thanks.

Best Answer

One possibility is to use code sections. Surround sections of code with "%%" like this
% This code is in one cell
x = 5
% This code is in the next cell

x = 6
% This code is in the next cell
x = 7
Then, in the editor,click anywhere in that section, then right-click and select "Evaluate this section". (There is also a keyboard shortcut.) It will evaluate your edited code, but not save it.
You can surround all of your code with %% ... %%, and run the whole code that way.
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