
What is the difference between an Array, ArrayList and a List?
List<int> list = new List<int>(); list.Add(6); List.Add(8); I know that in a List you can have the generic type so you can pass in any type that you cannot do in an Array but my exact questions are: Where would …
Python: list of lists - Stack Overflow
The first, [:], is creating a slice (normally often used for getting just part of a list), which happens to contain the entire list, and thus is effectively a copy of the list. The second, list(), is using the actual …
What is the difference between list and list [:] in python?
Nov 2, 2010 · When reading, list is a reference to the original list, and list[:] shallow-copies the list. When assigning, list (re)binds the name and list[:] slice-assigns, replacing what was previously in the list. …
Quick way to create a list of values in C#? - Stack Overflow
I'm looking for a quick way to create a list of values in C#. In Java I frequently use the snippet below:
How do I get the number of elements in a list (length of a list) in ...
Nov 11, 2009 · You are obviously asking for the number of elements in the list. If a searcher comes here looking for the size of the object in memory, this is the actual question & answers they are looking …
What is the difference between list [1] and list [1:] in Python?
Oct 5, 2012 · By using a : colon in the list index, you are asking for a slice, which is always another list. In Python you can assign values to both an individual item in a list, and to a slice of the list.
Java Generics: List, List<Object>, List<?> - Stack Overflow
Jan 29, 2009 · List<String> L = new ArrayList<String>(); You should read that as "L is a kind of List that deals with String objects". When you start dealing with Factory classes, it is critical to deal with …
How to concatenate (join) items in a list to a single string
Sep 17, 2012 · For handling a few strings in separate variables, see How do I append one string to another in Python?. For the opposite process - creating a list from a string - see How do I split a …
Meaning of list[-1] in Python - Stack Overflow
I have a piece of code here that is supposed to return the least common element in a list of elements, ordered by commonality: def getSingle(arr): from collections import Counter c = Counte...
python - Removing duplicates in lists - Stack Overflow
Nov 1, 2011 · How can I check if a list has any duplicates and return a new list without duplicates?