Ruby local variable is undefined

In Ruby local variables only accessible in the scope that they are defined. Whenever you enter/leave a Class, a Module or a Method definiton your scope changes in Ruby. For instance : v1 = 1 class MyClass # SCOPE GATE: entering class v2 = 2 local_variables # => [“v2”] def my_method # SCOPE GATE: entering …

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How to declare a variable in SQL Server and use it in the same Stored Procedure

I can see the following issues with that SP, which may or may not relate to your problem: You have an extraneous ) after @BrandName in your SELECT (at the end) You’re not setting @CategoryID or @BrandName to anything anywhere (they’re local variables, but you don’t assign values to them) In a comment you’ve said …

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How to get local variables updated, when using the `exec` call?

This issue is somewhat discussed in the Python3 bug list. Ultimately, to get this behavior, you need to do: def foo(): ldict = {} exec(“a=3”,globals(),ldict) a = ldict[‘a’] print(a) And if you check the Python3 documentation on exec, you’ll see the following note: The default locals act as described for function locals() below: modifications to …

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