macOS G icon for Variable? why?

[Darkroom]

clearly "V" is taken already for an instance variable, but what significance does "G" have to symbolize a (basic? raw? normal?) variable?

 

[crees!]

Global?

 

[Darkroom]

Global?

humm... Global? can these G variables be inherited automatically throughout all classes if they are only defined once without being imported from their original class?

i love your avatar btw... lol

 

[ScoobyMcDoo]

humm... Global? can these G variables be inherited automatically throughout all classes if they are only defined once without being imported from their original class?

Well, inherited is not the right word - that has a very specific meaning in OOP, and this is not it. Global variables are available to any code linked in. Very convenient maybe, but also very dangerous.

 

[Darkroom]

Well, inherited is not the right word - that has a very specific meaning in OOP, and this is not it. Global variables are available to any code linked in. Very convenient maybe, but also very dangerous.

really? why are global variables dangerous? i mean, is there an example so i can understand? ... so the "G" would stand for "Global" then?