handy 'and' and 'or' in Ruby

Here's a nice shortcut to verify if any member of an array satisfies a predicate, or to verify if all members of an array satisfy the predicate.

#!/usr/bin/env ruby -w

module Enumerable
    def any sym
        each {|item| return true if item.send sym }
        return false
    end

    def all sym
        each {|item| return false if !item.send sym }
        return true
    end
end

puts [1, 2, 3, 0, nil].any(:nil?)
puts [1, 2, 3, 0].any(:nil?)
puts ["", "", ""].all(:empty?)
puts ["", "", "dsa"].all(:empty?)

Output:

true
false
true
false