I am a big fan of extensions, but I wonder what would happen years from now 
when we start to have lots of extensions created for the primitive classes. The 
problem is that we can write a String extension for example in any swift file 
in the project, the name of the file has nothing to do with the content of it. 
But for extensions … I think it is more ordered if we can see all Int 
extensions for example in same file. I don’t know how this could be done, maybe 
there is a way to even copy paste it automatically in a single file but for 
easier access I guess it would be nice to be able to find all extensions of a 
class in one place. You might not restrict it for anyone to write it in that 
single file, but you could automatically create a file for each class just to 
group all extensions of a class. Is that possible ?
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