1
2
3

units = %w{ one two three four five six seven eight nine }

units.join.size # => 36

1
2
3
4
5
6
7
8
9
10

units = %w{ one two three four five six seven eight nine }


units.sum { |i| i.size } #=> 36

# A shorter equivalent if ActiveSupport is around
units.sum &:size         #=> 36

# Sum acts like join on an array of strings and is one character shorter if we are counting. ;)
units.sum.size

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

units = %w{ one two three four five six seven eight nine }

(units.collect do |item|
  item.size
end).sum


# Or, even more
counts = (units.collect do |item|
  counter = 0
  item.to_a.each do |character|
    counter = counter + 1
  end
  counter
end)
total_size = 0
counts.each do |size|
  total_size = total_size + size
end
total_size

1
2
3
4
5
6
7
8
9

units = %w{ one two three four five six seven eight nine }

File.open('counter.txt', 'w') do |f|
  units.each do |unit|
    f << unit
  end
end

puts File.size('counter.txt')

1
2
3

units = %w{ one two three four five six seven eight nine }

p units.join.length