Category "list"

Nested list to dataframe [using purrr + map]

I've looked at a lot of posts so I'm sorry if this is redundant, but was hoping to get some help flattening a nested list: test <- list() test <- c( li

How can I make a list that can be accesed by other classes?

I'm trying to make a project using the standard std::list. There is a list of names that have to be accessed by multiple classes. The list has to be inside a cl

Create new numpy array by duplicating each item in an array

I would like to create a new numpy array by repeating each item in another array by a given number of times (n). I am currently doing this with a for loop and .

List is printing datetime.datetime

I have a result list that contains something like [(datetime.datetime(2013, 1, 1, 0, 1, 14),), (datetime.datetime(2013, 1, 1, 1, 33, 50),)] How does one prin

How to Initialize the List with the same element in flutter dart?

I have a list in dart I want to initialize the list with n number of the same element. example:- initialize the integer list with element 5 4 times. L

how to create list of lists in c#

I am trying to create list of lists, where the large list represent paper contain collection of small list represent question, list of question consist of quest

Converting a dictionary of dictionaries to a List of dictionaries

I have a dictionary of dictionaries.Is there any possible way to convert it to a list of dictionaries? And if not, then how is the filter() method applied to fi

Combinations divided into rows with no repetition of elements

I'm working with lists in Python. I have a list of colleagues which is colleagues=['Jack', 'Jessica' 'John', 'Mark', 'Mary', 'Paul'] I want to calculate all po

How do I compare two letters or values in two different lists?

I am making a program that has two lists (in Python), and each list contains 5 different letters. How do I make it so that any index number I choose for both li

Pandas - Add a new column extracting value from arrays based on other column value

I am currently stuck trying to extract a value from a list/array depending on values of a dataframe. Imagine i have this array. This array i can manually create

Pandas - Add a new column extracting value from arrays based on other column value

I am currently stuck trying to extract a value from a list/array depending on values of a dataframe. Imagine i have this array. This array i can manually create

How to merge multiple Maps having the same keys but different values into a single Map

I have n maps of the kind: HashMap<String,Double> map1; HashMap<String,Double> map2; ... What could I do to merge all these maps into a single map?

Multi-level list to data frame in R

I'd like to convert the below list to a data frame but I'm failing at doing it. The list is taken from Microsoft Azure's API listing all resource types with tec

(Python)element at the equal interval from the end

How to get [1,4,7] from the my_list [1,2,3,4,5,6,7,8,9], which is the list of elements at the equal interval(in this case, 3) "from the end" of the my_list? m

SwiftUI: Sheet cannot show correct values in first time

I found strange behavior in SwiftUI. The sheet shows empty text when I tap a list column first time. It seems correct after second time. Would you help me? impo

Finding items in a list along with their price in Python

Python code to find items Price_list = ["01", "Banana", 5.00, "unit", "02", "Mango", 20.00, "kg", "03", "Apple", 15.00, "kg", "04", "Papaya", 25.

Netlogo: update a list after each movement

I need help with the following problem. I have turtles located in 3 different zones A, B, C. They have some properties turtle-own[place-to-go] patch-own[n-of-em

Pythonic way to print list items

I would like to know if there is a better way to print all objects in a Python list than this : myList = [Person("Foo"), Person("Bar")] print("\n".join(map(str

How to generate pseudo-random number in dart

I'm currently trying to pick up a random item in a list in dart. For this, I would like to generate a pseudo-random number (my seed) which will be the index whe

Zipping nested lists

I am trying but am unable to zip the following two lists in a particular way: list1 = [(1,2,3),(4,5,6),(7,8,9)] list2 = [10,11,12] zippedlist = [(1,2,3,10),(4,5