Create hash using block (Ruby)

Question

Can I create a Ruby Hash from a block?

Something like this (although this specifically isn't working):

foo = Hash.new do |f|
  f[:apple] = "red"
  f[:orange] = "orange"
  f[:grape] = "purple"
end

Answer 1

I cannot understand why

foo = {
  :apple => "red",
  :orange => "orange",
  :grape => "purple"
}

is not working for you?

I wanted to post this as comment but i couldn't find the button, sorry