[erlang-questions] output [[[|2]|1]|0] instead of [2.1.0]
Tue Feb 10 15:42:23 CET 2015
You are creating what is called an improper list.
This is a proper list:
This is the same list using the | operator:
Now what happens if you write this, for example?
It still works. This is called an improper list. An improper list is a
list where the tail is not a list.
When you do A++B Erlang will only ensure that A is a list. B can be
anything. If it's not a list, however, then you end up with an improper
I advise you to avoid ++ when doing most list related exercices, go with
the | operator instead.
On 02/10/2015 03:19 PM, Roelof Wobben wrote:
> I have to make a reversed list to a number so reverse_list(2) will
> output [2.1]
More information about the erlang-questions