Skipping part of code

Question

Matteo Tesori 2023-5-23

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评论： Walter Roberson 2023-5-23

I've wrote a script that can be splitted in independent parts. Sometimes I don't want to execute all of them, and so I'm using on each part of the script a simple check of the type

if flag
    % do what you have to do
end

where flag can be zero (if I want to skip the current part) or one (if I want to execute the current part).

This trick works fine but is pretty annoying because when I set a zero flag the analyzer returns a warning. I don't want suppress such warning of the analyzer, so I'm looking for a new solution (entirely procedural) that does not generate any warning.

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dpb 2023-5-23

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if flag
    % do what you have to do
else    
end

will probably be enough to suppress the warning. You can also suppress the warning on the specific line(s) with the %#ok comment/directive.

Nathan Hardenberg 2023-5-23

putting the else statement still produces the warning. But good to know with the %#ok comment

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Answer 1

Nathan Hardenberg 2023-5-23

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You could do it with a while loop. This does not produce a warning. And don't forget to put in the break statement at the end of the loop 😉

flag = 0;
while flag
    % do what you have to do
    a = 123
   break
end
disp('end')
end

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Answer 2

dpb 2023-5-23

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The other way that fools the code analyzer is to insert one level of indirection...the following doesn't generate the warning whether DBG is True or False...

DEBUGFLAG=[True|False];     % set the state desired
flag=DEBUGFLAG;             % assign state to the logic variable..
....
if flag
    % do what you have to do
end