We have an array and we need to print the double of each item in this array.
We can do this in so many ways.
First let's see how we do this
with the for loop. There are
two different ways that we can
use:
ruby
numbers = [1,4,8,9,41]
for i in 0...numbers.size do
puts numbers[i]*2
end
We can also use the for loop a bit differently as shown below:
ruby
numbers = [1,4,8,9,41]
for number in numbers do
puts number*2
end
Using each is the best way
In JavaScript and some
other programming languages,
for loops are used a lot.
However, in Ruby the most
preferred way of iterating
through items in an
array is by using each.
ruby
numbers = [1,4,8,9,41]
numbers.each do |number|
puts number*2
end
You can see that this is a simpler approach to achieving the same result.