CODEWITHSUNDEEP
c#
3D-kreativ
3D-kreativ

Reputation: 9299

How to handle returning list

I'm wondering how I should handle return of reference of list from another class? I want to pick the contents of the list from the calling method?

A simplified method that I use to fill a list with numbers and then return the reference of the list

public List<int> Shuffle()
{
    code....
    return nameOfList;
}

Upvotes: 0

Views: 106

Answers (3)

CloudyMarble
CloudyMarble

Reputation: 37566

You will have to create the List, fill it and return it, or you can pass it as a parameter, and fill it.

OPTION A

public List<int> Shuffle()
{
    nameOfList = new List<int>();
    code....
    return nameOfList;
}

OPTION B

Call:
Shuffle(ref myList);

Implementation:
public List<int> Shuffle(ref List<int> myList) 
{
    // work on myList
}

Upvotes: 1

Justin Harvey
Justin Harvey

Reputation: 14672

List is a reference type, so a reference will always be returned, even if you instantiate the list in your called method.

Upvotes: 0

ChrisF
ChrisF

Reputation: 137138

This is fine.

The list will be disposed of correctly once the reference in the calling code falls out of scope.

To use the list all you need to do is:

List<int> myList = otherObject.Shuffle();

You need to create the list in your method:

public List<int> Shuffle()
{
    List<int> nameOfList = new List<int>();
    code....
    return nameOfList;
}

Upvotes: 2

Related Questions