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Has anyone had to assign a list to an ISet? How do I go about and do this?
Say I have the class
class Foo
{
ISet<Item> Items { get; set; }
}
Now, I want to do the following:
var foo = new Foo() { Items = new List<Item>() { new Item() } }
602
Select(x => new TestClass() { AAA = (string)x[0], BBB = (string)x[1], CCC = (string)x[2] }). ToList();
This interface provides methods for implementing sets, which are collections that have unique elements and specific operations. The HashSet<T> and SortedSet<T> collections implement this interface.
So, this isn't possible. The only classes that implement ISet<T> are HashSet<T> and SortedSet<T>. Thanks for contributing an answer to Stack Overflow!
The simplest way to convert list to set in Python is by using the set () function. The set () method is used to convert an iterable element such as a list, dictionary, or tuple into the set. In this method, we use for loop to access each element of a list and add that element in a set by using add () function.
We start the load process with the first data table in the data set: Inspect the provided entity type and get a list of all its properties. For every property, check if we can map the property to a specified column in the current data table. This is called a column property map. Create a new list of the entity type.
Write "copy" or "clone" method creating instance of one type out of the instance of another. Clone elements one by one and add to a new list. Thanks a lot. You are very welcome. Good luck, call again. Please Sign up or sign in to vote. There are libraries that make this kind of thing easier like autopmapper.
List<Item> myList = ...
foo.Items = new HashSet<Item>( myList );
Keep in mind that a Set, unlike a List, must contain every element exactly once. Therefore, if myList contains multiple copies of some elements, all those copies, except one, will not make it into the set.
Equality of elements (for detecting multiple copies) is defined by the Equals and GetHashCode methods. If you would like to use a different definition of equality, you can use the overload of HashSet constructor that takes an IEqualityComparer<Item>.
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List<T> doesn't implement the ISet<T> interface… So, this isn't possible.
The only classes that implement ISet<T> are HashSet<T> and SortedSet<T>.
The closest you could get would be (if you cut out the unnecessary List object in between):
var foo = new Foo { Items = new HashSet<Item> { new Item() } };
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