How can I clear all the variables except one before restarting my program?
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Shayne Albertson
on 29 Nov 2015
Commented: Image Analyst
on 30 Nov 2015
Is there a way to clear all of the variables except one when I end a game I wrote so that the next time it starts the variables have to be re-entered?
I have a program where it runs while program == 1, so when I ask the user if they want to play again, if they don't answer yes, then program = 0 and the program ends, so if I could clear all the variables except program, that would be super convenient.
3 Comments
Image Analyst
on 30 Nov 2015
Or save what you want to a .mat file. Then you can recall variables from the .mat file at each run. This method will even recall variables across different sessions of MATLAB, unlike methods using clear().
Accepted Answer
Image Analyst
on 29 Nov 2015
Here's a snippet to study:
a = 10 % Declare sample variables.
b = 33;
result = 20;
% Get the names of the variables.
vars = whos
varNames = {vars.name};
celldisp(varNames);
% Let's loop over names, keeping the variable called "result"
for k = length(varNames): -1 : 1
fprintf('Checking %s\n', varNames{k});
if strcmp(varNames{k}, 'result')
continue;
end
fprintf(' Deleting %s\n', varNames{k});
clear(varNames{k});
end
clear ('k', 'varNames', 'vars'); % Get rid of loop iterator and other temporary items.
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