Force return from function while debugging

Question

I am debugging a program in MATLAB R2016a and would like to return from a sub-function without completing the function. For example, you can write in code:

if(conditionMet)
  return;
end

If the condition is met, it will force the function to end early and continue in the caller code. While I am debugging, I would like to force the function to end early as if I had encountered a return command. When I simply type return while in debug mode, nothing appears to happens. Is there a way to force a function to end early and continue running?

I think you want to write command 'return' in command window to leave the method in middle of execution and do not think it is possible. I think solution provided by @m7913d is the only option. — User1551892
– User1551892, Commented Mar 10, 2017 at 21:44

beaker · Accepted Answer · 2017-03-10 21:37:32Z

4

According to MATLAB Central and Undocumented Matlab, there is an undocumented function feature() that could be used in your case like this:

if feature('IsDebugMode')
   return;
end

answered Mar 10, 2017 at 21:37

beaker

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m7913d · Accepted Answer · 2017-03-10 21:40:35Z

2

I think it is not possible in general with the current release of Matlab.

If you know at beforehand at which place(s) you potentially want to return from your function while debugging, you can use the following trick.

function yourFunction ()
    breakDebug = false;
    ...
    if breakDebug
        return; % location at which you may break your function during debugging
    end
    ...
    return;
end

By setting breakDebug while debugging, the program will break at your next potentially break location.

answered Mar 10, 2017 at 21:40

m7913d

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