How do I remove blank elements from an array?

Question

I have the following array

cities = [\"Kathmandu\", \"Pokhara\", \"\", \"Dharan\", \"Butwal\"]

I want to remove blank elements from the ar

Answer 1

In my project I use delete:

cities.delete("")

Answer 2

To remove nil values do:

 ['a', nil, 'b'].compact  ## o/p =>  ["a", "b"]

To remove empty strings:

   ['a', 'b', ''].select{ |a| !a.empty? } ## o/p => ["a", "b"]

To remove both nil and empty strings:

['a', nil, 'b', ''].select{ |a| a.present? }  ## o/p => ["a", "b"]

Answer 3

Here is what works for me:

[1, "", 2, "hello", nil].reject(&:blank?)

output:

[1, 2, "hello"]

Answer 4

another method:

> ["a","b","c","","","f","g"].keep_if{|some| some.present?}
=> ["a","b","c","f","g"]

Answer 5

Here is one more approach to achieve this

we can use presence with select

cities = ["Kathmandu", "Pokhara", "", "Dharan", nil, "Butwal"]

cities.select(&:presence)

["Kathmandu", "Pokhara", "Dharan", "Butwal"]

Answer 6

You can Try this

 cities.reject!(&:empty?)