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Does syntax checking support undefined variables?

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bing zhu
bing zhu il 7 Dic 2022
Commentato: bing zhu il 7 Dic 2022
Does matlab support undefined variables like pycharm(fig 1)?The system and software are as follows:window10,matlab r2022b.

Risposte (1)

Hiro Yoshino
Hiro Yoshino il 7 Dic 2022
Modificato: Hiro Yoshino il 7 Dic 2022
MATALB automatically identifies problems. Debugging features help you diagnose specific issues, see as follows :
I suppose this function is active by default though.
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Hiro Yoshino
Hiro Yoshino il 7 Dic 2022
Modificato: Hiro Yoshino il 7 Dic 2022
Sorry, I took it wrong. Let me put it this way....: No, but the problem identifier is "on" by default.
The trouble is that MATLAB never knows if the variable "b" exists in your workspace. So this syntax can be wrong and can be right dependiong on the situation.
For example, you may run a simulation using Simulink models and export something as a variable that would not exist without a run of the simulation. An automatic analysis will be perfomed, once the simulation is over. Your variable "b" is used in the script of this automatic analysis
So this is not a "bug" but a feature.
You can check if your variables exist in the workspace by the method like this.

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