How to sort list of sublists as per key/keys of sublist?

by Lev777 :: Rate this Message:

I have the following structure:

object('obj1', [id='12', color='blue']).

object('obj4', [id='13', color='red', weight=120]).

object('obj21', [id='15 a', color='yellow', weight=1000, price=23]).

object('obj21', [id='16 a', color='blue', weight=200, price=230]).

I have a predicate which finds all objects with particular key, e.g. objects with color='blue'.

In many cases result will be list of objects.

My question is:

How to write a sorting predicate which will sort objects within a resulting list by one of one or many keys(id or/and price, etc...)

Thanks!