Efficiently deleting item from within 'foreach'

Question

For now, the best I could think of is:

bool oneMoreTime = true;
while (oneMoreTime)
{
    ItemType toDelete=null;
    oneMoreTime=false;
    foreach (ItemTyp         


        

Answer 1

Just as I finished typing I remembered that there is lambda-way to do it.

collection.RemoveAll(i=>ShouldBeDeleted(i));

Better way?