Category "list"

What is a Dummy Head?

So I want to know for sure what is a dummy head/dummy node in a linked list. Can somebody tell me the definition and give me an example maybe?

IEnumerable vs List - What to Use? How do they work?

I have some doubts over how Enumerators work, and LINQ. Consider these two simple selects: List<Animal> sel = (from animal in Animals

Union two list by property

I would like to merge two list without duplicates. It should distinct only by one property. I have a class: public class Test { public int Id { get; set;

How do I change all negative numbers to zero in python?

I have one list list1 = [-10,1,2,3,9,-1] I want to change the negative number to zero so that it looks like list1 = [0,1,2,3,9,0] how can I do it

How to return dictionary keys as a list in Python?

In Python 2.7, I could get dictionary keys, values, or items as a list: >>> newdict = {1:0, 2:0, 3:0} >>> newdict.keys() [1, 2, 3] Now, in