Can I / should I enumerate over an IGrouping more than once?
Is this code correct / safe? Is it safe to iterate an IGrouping more than once?
Or should I rather do:
var groupings = myList.GroupBy(listElement => listElement.Key);
foreach(var groupoing in groupings)
{
foreach(var elt in grouping)
DoSomething(elt);
foreach(var elt2 in grouping)
DoSomethingElse(elt2);
}var groupings = myList.GroupBy(listElement => listElement.Key);
foreach(var grouping in groupings)
{
var groupingList = grouping.ToList();
foreach(var elt in groupingList)
DoSomething(elt);
foreach(var elt2 in groupoingList)
DoSomethingElse(elt2);
}