Menu
I'm trying to figure out how to traverse a generic list of items that I want to remove from another list of items.
So let's say I have this as a hypothetical example
List<car> list1 = GetTheList(); List<car> list2 = GetSomeOtherList(); I want to traverse list1 with a foreach and remove each item in List1 which is also contained in List2.
I'm not quite sure how to go about that as foreach is not index based.
816
How to Remove an Element from a List Using the remove() Method in Python. To remove an element from a list using the remove() method, specify the value of that element and pass it as an argument to the method. remove() will search the list to find it and remove it.
The remove() method removes the first matching element (which is passed as an argument) from the list. The pop() method removes an element at a given index, and will also return the removed item. You can also use the del keyword in Python to remove an element or slice from a list.
Items of the list can be deleted using del statement by specifying the index of item (element) to be deleted. We can remove an item from the list by passing the value of the item to be deleted as the parameter to remove() function. pop() is also a method of list.
You can use Except:
List<car> list1 = GetTheList(); List<car> list2 = GetSomeOtherList(); List<car> result = list2.Except(list1).ToList(); You probably don't even need those temporary variables:
List<car> result = GetSomeOtherList().Except(GetTheList()).ToList(); Note that Except does not modify either list - it creates a new list with the result.
152
You don't need an index, as the List<T> class allows you to remove items by value rather than index by using the Remove function.
foreach(car item in list1) list2.Remove(item); If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
