From doing exercises this week, I learned that how to create a hash from an array. I think it will be pretty useful in the future pratices.

array = ["apple", "cat", "oranges", "rabbits"]
new_hash = Hash.new
array.each do |element|
new_hash[element] = element.length
end
new_hash
#{"apple"=>5, "cat"=>3, "oranges"=>7, "rabbits"=>7}

How simple is that? Right? Hope this example will help you. I also learned about Enumerable#max_by via doing the exercise.

array = ["aaa", "a", "aa"]
array.max_by { |x| -x.length }
# => "a"
[].max_by { |x| -x.length }
# => nil

Just two lines of code, you can get which is the longest words in an array. That is how powerful RUBY is. I remember when I was doing some JS practices before, I had to write at least ten lines of code to solve the problem. Hope this mini-blog post makes sense to you.