Coder deleting variable definitions

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Adam Kaas 2012-6-13

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https://ww2.mathworks.cn/matlabcentral/answers/41102-coder-deleting-variable-definitions

Why oh why does coder feel the need to delete my variable definitions from time to time? It is unbelievably frustrating having to redefine 200+ variables.

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Kaustubha Govind 2012-6-14

Adam: I think I'm a little confused about your workflow. Perhaps you should consider sending your files and reproduction steps to MathWorks Tech Support and verify if this is expected behavior or a bug?

Adam Kaas 2012-6-14

I will send this to them. I think it is a bug. I figured out how to recreate the problem 100% of the time though. You can test this yourself and let me know if your results vary. Create a coder project, and on the overview tab, when you add an entry-point file, make sure you define at least one field. Then left click on the entry-point files name and hold it just longer than a click. If you drag that file even the slightest, your field definitions will be erased.

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采纳的回答

Fred Smith 2012-6-26

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Hi Adam,

Sorry to hear about your frustration. If you have 200 variables you might want to consider a different approach.

Have you looked at using codegen from the command-line instead of the UI? You can use "pre-conditioning" to incorporate your type definitions directly into your MATLAB code. This mechanism is verbose but solid. In many cases you can auto-generate the pre-conditions using some helper scripts. This feature is also available through the UI as of R2012a although it is somewhat hidden in the Settings dialog.

Another possibility in the UI, is to define your inputs by example. If you have appropriates variables in the base workspace, MATLAB coder can automatically figure out the types from those.

Hope this helps,

Fred

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Adam Kaas 2012-6-26

Thanks Fred. I never ended up getting it reported (ironically the bug report page bugged out...) but thankfully I got everything I needed from Coder and no longer need to use it. I will look at using codegen in the future as it sounds to be a much more painless process. Thanks again!

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