Hello, can anybody help here..? I have a list of players and I what to delete an element, but every for loop the list is reverting to original list. See code below list = Enum.filter(players, fn(x) -> # Sys.Log.debug("#{x["category"]}") x["category"] == category end) …

Couple of things here. The most important is that data is immutable. Secondly however while this may seem like a nitpick, the formatting here makes it super hard to figure out what’s going on. A more idiomatic presentation of this code might be: list = Enum.filter(players, fn(x) -> x["category"]…

def remove_random_players_from_category(players, category, n) do players |> Enum.filter(fn(player) -> player["category"] == category end) |> remove_random_players(n) end def remove_random_players(players, 0), do: players def remove_random_players(players, n) do random = …

… defp delete_list(, a, _), do: a defp delete_list([h | t], a, f) do case f.(h) do true → delete_list(t, a, f) _ → delete_list(t, a ++ [h], f) end end def delete_from_list(a, f), do: delete_list(a, , f) … testing, f = fn (a) → fn(x) → a == x.name end end delete_from_list [%{name: “a”}, %…

Elixir Programming Language Forum

Deleting item from a list

Questions & Help Questions

brightball December 7, 2016, 3:23pm 2

The function returns the updated list. It doesn’t modify the list in place.