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Function or variable 'world' is not recognized. #109

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zzrs123 opened this issue Feb 17, 2022 · 1 comment

zzrs123 commented Feb 17, 2022

When I read Navigation of this book, I found that the variable or function "world" of class Navigation was not found

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zzrs123 commented Jun 17, 2022

It seems that no one has found me.

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