I am new to Ruby and stuck with this issue. Let's say I have an array like this:
arr = [1, 2, 's', nil, '', 'd']and I want to remove nil and blank string from it, i.e. final array should be:
arr = [1, 2, 's', 'd']I tried compact but it gives this:
arr.compact!
arr #=> [1, 2, 's', '', 'd'] doesn't remove empty string.I was wondering if there's a smart way of doing this in Ruby.
You could do this:
arr.reject { |e| e.to_s.empty? } #=> [1, 2, "s", "d"]
Note nil.to_s
=> ''.
If arr might
contain another kind of empty object (e.g, array or hash) that you wish to keep, change e.to_s.empty? to e.to_s
== ''