Small fixes on how we think about enums

[frojasg]

• fix assignations
• fix map_reduce call
• fix parameters in assert_raise expectation

[frojasg]

I don't have a problem to change the function syntax. Could you elaborate a little bit why do you prefer this style please. Thanks

[apieum]

Yes of course, I prefer the fn syntax because it is easier to understand for someone learning elixir. It makes clear that you need a function as the second argument (which is how it is documented). When you don't know elixir it's not obvious that &(&1 == 2) is a function.

Even if &(&1 == 2) is more idiomatic of elixir than "fn" the point here is just to learn about enum, and I think it is better to point the & idiom when learning about functions. ;)

[frojasg]

it makes a lot of sense. Thanks for the feedback

[frojasg]

@apieum Could you take a look now please. Thanks!

[apieum]

It's perfect for me, thanks a lot.