Spelling/grammar:

> Elixir is functional language

It's A functional language.

> before-hand

beforehand

> They don’t deal with failure or anything like that but in functional life there are many cases where this just becomes much more readable

I would rewrite that entire sentence to "They don’t deal with failures or anything like that but in a functional life there are many cases where this becomes more readable"

> that don’t feel like normal Elixir code. Odds are you are

Should not be a period I think, but a comma.