Hi Users, I am trying to use the new ICL (interval container library) for a project that requires some interval based calculations. I have a question on using the joining interval_map. For example, below I have a conceptual 30 minute window divided into three 10 minute intervals. I want to do some aggregates in my 10 minute windows. { [0,10], (10, 20], (20, 30) } Now say, I have 2 clients shopping in the first interval (0, 10) and their shopping time window interval is [2, 5] and [4, 9] minutes respectively. When I add the 2 interval, value pairs to my interval_map, I see that the interval map gets splited from [0, 10] to { [0,2], [2, 4], [5,9], [9,10] }. How do I make sure the interval still remains from [0, 10]. My question is how do I make sure my original interval of 10 minutes is preserved. The samples mentioned do mention about joining interval_map but I cannot seem to figure out an example for my requirement. Thank you for your help Dece