either_or.rb

# Structured and Nested
obj = {
  container_a = {
    name: "Foo",
    contents: [item_a, item_b, item_e]
  }
  container_b = {
    name: "Bar",
    contents: [item_c, item_d, item_z]
  }
}

## VS

# Unstructured and Flat

obj = {
  contents: [
    { val: item_a, location: 'container_a' },
    { val: item_b, location: 'container_a' },
    { val: item_c, location: 'container_b' },
    { val: item_d, location: 'container_b' },
    { val: item_e, location: 'container_a' },
    { val: item_z, location: 'container_b' },
    
  ]
}

move_item(obj, item_e, 'container_b')