Hi, I’m now writing my codes and encountered a really strange error: [image] As can be seen, the error said “obj_path_tmp not defined”. However, in debugging mode (using Debugger), I can read the value (even add to obj_linearised): [image] So, what’s wrong with it? It’s really confusing … EDI…

The debugger handles scope slightly wrong when you execute julia code in it, so if you defined obj_path_tmp in a more inner scope it is possible the debugger is showing it still being defined while it is not. Here is a MWE: 1|debug> st In f() at REPL[11]:1 1 function f() 2 for i in 1:5 3 …

Please don’t post screenshots (copy should work from most IDEs and the terminal), and make an MWE. [image] Please read: make it easier to help you Meta Discussion Welcome to the Julia Discourse! We are enthusiastic about helping Julia programmers, both beginner and experi…

@kristoffer.carlsson Thank you. Your solution works very well! Additional questions: As you answered, adding local a works well. However, it looks unnatural to write codes to me. Is there any other elegant solutions? I used to code with Python, and to debug codes, I usually added a short line lik…

[image] iHany: As you answered, adding local a works well. However, it looks unnatural to write codes to me. Is there any other elegant solutions? Well, this is just the way Julia scoping rule works. If you need access to a variable that you declare in an inner scope, outside that scope you n…

Thank you. How Julia works is quite different from Python. Actually, REPL is also an inconvenient part of Julia to me cuz I used to edit and run codes via vim and terminal. Probably I have to get used to Julia’s grammar and convention :frowning: I really hope that it’s not familiar for a while, a…

Met a weird error; UndefVarError

New to Julia

Tamas_Papp September 9, 2020, 9:40am 2

Please don’t post screenshots (copy should work from most IDEs and the terminal), and make an MWE.

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Met a weird error; UndefVarError

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