Sorting a List of Objects in Ruby with Custom Logic - Unexpected Results with Nil Values
Does anyone know how to I'm trying to sort an array of custom objects in Ruby based on a specific attribute, but I'm running into issues when some of the objects have `nil` values for that attribute. I'm using Ruby 3.0.1 and the array contains a mix of objects with valid values and some that are `nil`. My current implementation looks like this: ```ruby class Item attr_accessor :value def initialize(value) @value = value end end items = [Item.new(5), Item.new(nil), Item.new(2), Item.new(8), Item.new(nil)] sorted_items = items.sort_by(&:value) ``` When I run this, I expect the output to be sorted in ascending order, but I found that the `nil` values are being placed at the beginning of the array, which isn't what I want. I would prefer for those `nil` values to be pushed to the end of the sorted array instead. I've tried using a custom block for `sort_by`, like this: ```ruby sorted_items = items.sort_by { |item| item.value.nil? ? Float::INFINITY : item.value } ``` However, it doesn't seem to be working as intended since it still places the nils in a way that disrupts the expected order. The output is: ``` [<Item:0x00007f9c9c0f1c60 @value=5>, <Item:0x00007f9c9c0f1c30 @value=2>, <Item:0x00007f9c9c0f1c00 @value=8>, <Item:0x00007f9c9c0f1be0 @value=nil>, <Item:0x00007f9c9c0f1bc0 @value=nil>] ``` I really want to have all `nil` values at the end of the sorted array without having to filter them out first. Can someone guide to understand how to achieve this correctly? Is this even possible?