
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 = …
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 …
Create a list of places - Android - Google Maps Help
In Google Maps, you can create a list of places, like your favorite places or places you want to visit. Make a new list On your Android phone or tablet, open the Google Maps app
How to initialize List<String> object in Java? - Stack Overflow
Nov 15, 2012 · List is an Interface, you cannot instantiate an Interface, because interface is a convention, what methods should have your classes. In order to instantiate, you need some …
How can I find the index for a given item in a list?
Caveats Linear time-complexity in list length An index call checks every element of the list in order, until it finds a match. If the list is long, and if there is no guarantee that the value will be …
collect_list by preserving order based on another variable
Oct 5, 2017 · But collect_list doesn't guarantee order even if I sort the input data frame by date before aggregation. Could someone help on how to do aggregation by preserving the order …
What is the difference between List.of and Arrays.asList?
Oct 5, 2017 · Let summarize the differences between List.of and Arrays.asList List.of can be best used when data set is less and unchanged, while Arrays.asList can be used best in case of …
Difference between List, List<?>, List<T>, List<E>, and List<Object>
The notation List<?> means "a list of something (but I'm not saying what)". Since the code in test works for any kind of object in the list, this works as a formal method parameter. Using a type …
c# - define a List like List<int,string>? - Stack Overflow
I need a two column list like: List<int,string> mylist= new List<int,string> (); it says using the generic type System.collection.generic.List<T> requires 1 type arguments.
How to overcome TypeError: unhashable type: 'list'
The reason you're getting the unhashable type: 'list' exception is because k = list[0:j] sets k to be a "slice" of the list, which is logically another, often shorter, list.