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Kevin Ohlsson
4,559 PointsWhat does Kenneth mean with 'scope' and 'outside the scope of the script'?
Does he mean that functions are outside of the scope too? Why is the list 'outside of the scope'? It seems as if the script is in the middle of the functions and the 'meat' of the script?
Kevin Ohlsson
4,559 PointsThat's the line nekilof! I should've been more specific to begin with, i'll keep that in mind for when i post another question.
Jennifer answered my question, thanks for helping to clarify the question though!
1 Answer
Jennifer Nordell
Treehouse TeacherHi there again! I see you've run into the concept of scope. This is a tricky one. Kenneth sets up a list outside of the function we're going to use. Any variables we declare inside the function are only available while that function is executing. The second it ceases to execute, we no longer have access to those variables. This means that the variables inside the function are scoped to the function. However, if we declare a variable in the global scope (outside all functions), then this variable will be accessible everywhere in our code.
Hope this helps!
edited for additional information
As a side note, take a look at this quote from the video and see if it makes more sense with the above explanation.
By using the mutable shopping list variable out in the global scope, or the outermost part of the script, we were able to update and access it in all of the other parts of our script.
Kevin Ohlsson
4,559 PointsThank you (again!) Jennifer :)
Very clear. I understand that 'the scope' refers to the hierarchy of how code-blocks and pieces of code are placed in the program now, Is that correct?
A X
12,842 PointsA X
12,842 PointsKevin are you talking about Kenneth's line about, "By using the mutable shopping list variable out in the global scope, or the outermost part of the script, we were able to update and access it in all of the other parts of our script." ?