Can we use l,k,z as global variables in GUI rather than using x,y,z ?
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I'm working on image steganography code. Here I have used global l, global k, global z in the code. Is that fine or should I use global x, global y, global z ?
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Geoff Hayes
le 18 Sep 2019
Gayatri - why are you using global variables at all? Please describe why you feel you need to use them...
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Guillaume
le 18 Sep 2019
You shouldn't be using global variables at all. There's always better ways of doing whatever it is you're doing.
As for the name of global variables, you can use whatever you want. If you do use global variables (which are a major source of bugs) I would recommend using very descriptive names rather than one letter variables.
Obviously, the name must be the same in each unit of code that uses these variables.
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Guillaume
le 18 Sep 2019
You can use the handles structure to pass data between callbacks.
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