hello, new to ruby can someone explain me this function-CodePudding

the << operator is what confuses me the most

  if prev.include? current
    p = reconstruct_path(prev, prev[current])
    [p] << current
  else
    current
  end
end  ```

CodePudding user response：

<< is known as the "shovel". It pushes "things" into other "things". Like this for example:

thing_array = [1,2,3,4,5]
thing_array << 6

Result: => [1, 2, 3, 4, 5, 6]

So the array thing_array was created with the numbers 1-5. By using the shovel I pushed the new entry into the array. It's just a shortcut to make code cleaner and lighter.

I hope that makes sense.