I think I might be a little confused but I cant really understand exactly

when to separate code into a concern, and when to separate it into a

library.

1. What's the exact difference?

2. Where are they available?

3. What is their goal? what is the goal of putting code in a concern and in

a library?

Hope i am not saying something completely dumb, but I couldn't really find

a comparison and I guess I am pretty new to the concept of concerns.

all the best,

Andre

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