How to sort a list by existing properties

Question

I am using this line here to sort a list based on the object\'s name.

g.V.sort{it.name}

How do I sort it based on \"name\" if it exists, if not

Answer 1

This is my totally untested effort which is probably riddled with bugs

def comparator = {o1, o2 ->

  // wording of question suggests title will always exist, if not, add more hasProperty checks  
  def diff = o1.title <=> o2.title

  if (o1.hasProperty('name') && o2.hasProperty('name')) {  
    def nameDiff = o1.name <=> o2.name

    if (nameDiff != 0) {
      diff = nameDiff
    }
  } 
  diff

} as Comparator


def someList = []
// populate the list...    
someList.sort(comparator)