Project Euler No.1 Ruby

euler1.rb

def div_by_three_or_five(arry)
  sum = 0 
  arry.each do |item|
    if item % 3 == 0 or item % 5 == 0
      sum += item
    end
  end
  sum
end

def div_by_three_or_five(arry)
  sum = 0 
  arry.each { |item| sum += item if item % 3 == 0 or item % 5 == 0 }
  sum
end

def div_by_three_or_five(arry)
  sum = 0
  cond = proc {|el| el % 3 == 0 or el % 5 == 0}
  arry.each {|el| sum += el if cond.call(el) }
  sum
end

def div_by_three_or_five(arry)
  cond = proc {|el| el % 3 == 0 or el % 5 == 0}
  arry.select {|el| cond.call(el)}.inject {|sum, el| sum + el}
end

div_by_three_or_five (1..1000).to_a