RUBY

ruby remove nil & empty element in array

[nil, 'apple', 'orange', '', 'banana'].reject(&:blank?)
=> ["apple", "orange", "banana"]

ruby remove element from array by value

a = [3, 2, 4, 6, 3, 8]
a.delete(3)

remove nil in array ruby

# A simple example function, which returns a value or nil
def transform(n)
  rand > 0.5 ? n * 10 : nil }
end

items.map! { |x| transform(x) } # [1, 2, 3, 4, 5] => [10, nil, 30, 40, nil]
items.reject! { |x| x.nil? } # [10, nil, 30, 40, nil] => [10, 30, 40]

ruby remove value from array

# Altering the array:
a = [3, 2, 4, 6, 3, 8]
a.delete(3)
#=> 3
a
#=> [2, 4, 6, 8]

# Creating new array:
b = [3, 2, 4, 6, 3, 8]
b - [3]
#=> [2, 4, 6, 8]
b
#=> [3, 2, 4, 6, 3, 8]

ruby remove nil element in array

[nil, 'apple', 'orange', '', 'banana'].compact
=> ["apple", "orange", "", "banana"]