I run these lines under iex: iex(62)> Enum.filter([1, 1000], fn(x) -> rem(x, 2) == 0 end) [1000] #ok iex(63)> Enum.filter([1, 75], fn(x) -> rem(x, 2) == 0 end) [] #ok iex(65)> Enum.filter([1, 2, 3], fn(x) -> rem(x, 2) == 0 end) [2] #ok iex(66)> Enum.filter([1, 75], fn(x) -> rem(x, 2) == 0 end) …

This is a common issue explained best by FAQ · elixir-lang/elixir Wiki · GitHub Why is my list of integers printed as a string? For example: iex(1)> [27, 35, 51] '\e#3' Pretty-printing of lists is done by using Erlang’s native function. It is designed to print lists as strings when all elements…

This a little bit annoying if you don’t set IEx.configure inspect: [char_lists: false] Thanks for solution :smile:

Elixir Programming Language Forum

Enum.filter BUG?!

Questions & Help Questions

andre1sk November 24, 2016, 2:08pm 2

50 ASCII for 2
it thinks it’s a charlist
‘2’ == [50]