score:7
The simplest way would be to do this:
foreach(var item in bList) aList.Remove(item);
Remove doesn't do anything if the item isn't already in the list.
If by "use LINQ" you mean use LINQ to determine if an item in aList is in bList, that's not necessary.
A LINQ solution would be more efficient ONLY if both of these conditions are true:
aListis very small compared tobList- All of the items in
aListthat are also inbListare at the very beginning ofbList
score:0
Check out the LINQ "Except" extension:
http://www.dotnetperls.com/except
Except subtracts elements from a collection. This extension method is found in the System.Linq namespace in the .NET Framework. It essentially subtracts all the elements in one collection from another.
score:8
Take a look at List<T>.RemoveAll
aList.RemoveAll(x => bList.Contains(x))
FWIW, this will also remove all objects in aList contained in bList, not only the first instance of each bList object in aList, if this is important.
score:2
You can use the Except extension method:
var result = aList.Except(bList);
Note that you can also pass an IEqualityComparer<T> as a second argument if you need to customize the equality checking.
Source: stackoverflow.com
Related Articles
- LINQ: delete from a list elements contained in another list
- Using Linq query inside List<T>.AddRange to conditionally add elements from one list to another
- LINQ in C#. Check if one list contains elements from another one
- Select list elements contained in another list in linq
- Linq to entities to return a list that contains elements from another list
- Cannot exclude from a list items contained in another list with Linq
- Construct a list of wpf Hyperlink elements from an XML source file using Linq
- Turning a chain of foreach's for inserting elements from a list into another list into linq
- c# Linq or code to extract groups from a single list of source data
- How to construct a LINQ Query to test a list against another list where elements start with the elements from the other
- LINQ query to find if items in a list are contained in another list
- Create a list of one object type from a list of another using Linq
- C# LINQ select from where value is not contained in array / list
- Linq - How to select items from a list that contains only items of another list?
- Check if one list contains any elements from another
- How to understand the following C# linq code of implementing the algorithm to return all combinations of k elements from n
- LINQ select List where sub-list contains item from another list
- Linq getting a list from another list
- Assign values from one list to another using LINQ
- Using LINQ to delete an element from a ObservableCollection Source
- Why does adding a list to another list, using add range, remove the elements from the first list?
- Get groups of 4 elements from name value list using LINQ in C#
- How to generate a unique list of items from another list using LINQ in C#
- How do I use Linq to find the elements of a list that are not present in another list?
- Select items from a List where the children contain the items from another List using LINQ
- How to select a distinct list of elements contained in another list?
- How to fill a property of an object from another list using LINQ
- How to use LINQ to query list of strings that do not contain substring entries from another list
- Create a List of elements from a DataTable LINQ Column
- Get the count of distinct elements from a list of lists using LINQ
- Quick way to check 2 lists are the same c#
- How do I access consecutive elements in an IQueryable<T> object?
- Linq query syntax equivalent group by id having sum(amount) > x amount
- LinqDataSource: How to assign values to where parameters in code?
- Initialize a Linq to Sql object via business logic
- Left Join, Group By and Sum where related records don't exist
- How can I get distinct objects extracted from a property of a list of objects?
- Conditional Join In LINQ?
- Create a list of one object type from a list of another using Linq
- Using Func property selector with Entity Framework 6
- Using LINQ to copy data from one list to another
- Value can not be null exception
- EF join works but SelectMany doesn't
- How to filter related data using Entity Framework and LINQ to SQL and LinqKit PredicateBuilder Or IdeaBlade DevForce
- How to read .csv file into array using LINQ
- How can I convert anonymous type to strong type in LINQ?
- foreach statement cannot operate on variables of type 'object'
- How do I get an Object from the Primary Key
- Linq Nullable object must have a value. errors in .NET 6 and EF Core
- How can I group a List<K> by a List<T>, depending on the results of an expression<T, K>?
