ugly_map.rb

# assuming that `things` is an array of hashes which we want to process in some way
things = [
    { one: 42, two: 'spam' },
    # ... and so on
    { one: 24, two: 'maps' }
]

things.map do |thing|
  hsh = {}
  hsh[:number] = thing[:one] * 2 + 3 # or whatewer
  
  # more complex processing, so we cannot just return hash literal such as:
  # { number: thing[:one], url: thing[:two] }
  hsh[:url] = Nokogiri::HTML.fragment(thing[:two]).at('some_element')[:some_attr]
  hsh
  
  # that `hsh`, `hsh`, `hsh` really annoy me
end

If your map is really as simple as you show, you can just use a literal hash:

things.map do |thing|
  {
    number: thing[:one] * 2 + 3,
    url: Nokogiri::HTML.fragment(thing[:two]).at('some_element')[:some_attr]
  }
end