Variable Listener, debug if expr == true

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Andreas Justin 2013-4-10

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/71433-variable-listener-debug-if-expr-true

Is there a way to start debug when a variable changes to a specific value, and stop where this happens. I don't mean the conditional breakpoint. (No yellow breakpoints, they're not what i need).

my "breakpoint" is variable, it only stops

< pseudocode >

if expr
  STOP NOW!
end

< /pseudocode >

Note: This code isn't in a .m file

Like stop on error warnings work. But stop on line where isempty(x), or x == 10

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Jan 2013-4-10

This code is not in an M-file? Then why not placing it in an M-file and using conditional breakpoints?

Andreas Justin 2013-4-10

编辑：Andreas Justin 2013-4-10

在 MATLAB Online 中打开

Thank you for your help! But this isn't what i need!

My Problem is that a variable gets empty at a point where it shouldn't be (and logicly not possible, in my oppinion) and i don't get why, i debugged for several hours but i don't find the reason. and this feature would very help. As i said, like the stop on error occurs.. which would look in pseudo code