Get unique objects if theres an array which is repeated in some other object in an array of objects

const messages = [{ id: 1, name: "Jack", users: [2,4] }, { id: 2, name: "Alex", users: [2,6] }, { id: 3, name: "John", users: [2,6] }] Need to get unique object based on a nested array key. check if array containing same value is repeated in some other object and return only the last… Read More Get unique objects if theres an array which is repeated in some other object in an array of objects

How to filter a dataset to have unique values in a column without deleting the already unique values in the targeted column?

I have this dataframe that I need to make filtering as follows library(dplyr) library(tidyverse) df = data.frame(x = rep(1,20), y = c(rep(2,5),rep(3,5),11:20) ) df = df%>%group_by(x)%>%filter(y==unique(y)) however the output is df = df%>%group_by(x)%>%filter(y==unique(y)) Warning message: In y == unique(y) : longer object length is not a multiple of shorter object length > df # A… Read More How to filter a dataset to have unique values in a column without deleting the already unique values in the targeted column?

How to get the unique string values in a column with numbers and characters in python

I want to print the unique values taken in this column and not the numerical ones. I only want to output the values taken before the special characters (when there is one) and I don’t want the second part of the string. For example for the row "lala :59 lzenvke" I don’t want to take… Read More How to get the unique string values in a column with numbers and characters in python

I have a list named CB whose elements are also lists, how to keep only the unique elements of CB? np.unique() or list(set()) do not work

I have a very long list named CB with possibly repeated elements. For example, CB could be [[0, 0], [0, 1], [0, 2], [0, 1], [1, 1], [1, 2], [0, 2], [1, 2], [2, 2]]. Each element in CB is a list of sorted numbers. In this example, I want to keep [[0,0], [0,1], [0,2],… Read More I have a list named CB whose elements are also lists, how to keep only the unique elements of CB? np.unique() or list(set()) do not work

I'd like to get a unique of a series of a dataframe while preserving its index

I’d like to get a unique of a series of a dataframe while preserving its index: In Particular i have an datframe with two columns:’Stock’ and ‘Company Name’. I’m using the follow code: lot = titoli1[‘Stock’].unique() but the returns is a unique serie but i want both series value related on unique, stock, value. Thank… Read More I'd like to get a unique of a series of a dataframe while preserving its index