small evaluator refactoring
small evaluator refactoring

kelvinst/elixir,beedub/elixir,gfvcastro/elixir,kimshrier/elixir,pedrosnk/elixir,kimshrier/elixir,lexmag/elixir,beedub/elixir,ggcampinho/elixir,kelvinst/elixir,pedrosnk/elixir,antipax/elixir,elixir-lang/elixir,ggcampinho/elixir,michalmuskala/elixir,antipax/elixir,lexmag/elixir,joshprice/elixir,gfvcastro/elixir