set-difference Questions
5
Solved
The Problem
I have two string vectors of different lengths. Each vector has a different set of strings. I want to find the strings that are in one vector but not in both; that is, the symmetric di...
Yardstick asked 5/11, 2013 at 20:9
8
Solved
I have two arrays list1 and list2 which have objects with some properties; userId is the Id or unique property:
list1 = [
{ userId: 1234, userName: 'XYZ' },
{ userId: 1235, userName: 'ABC' },
...
Confectionary asked 26/10, 2015 at 22:8
33
Solved
I have two lists in Python:
temp1 = ['One', 'Two', 'Three', 'Four']
temp2 = ['One', 'Two']
Assuming the elements in each list are unique, I want to create a third list with items from the first li...
Rightness asked 11/8, 2010 at 19:38
3
Solved
i'm trying to write some code to calculate the difference of two sets of intervals A - B , Interval endpoints are integers , but i'm strugling to come with efficient solution , any suggestion would...
Claymore asked 18/11, 2013 at 23:21
15
Solved
Let A and B be two sets. I'm looking for really fast or elegant ways to compute the set difference (A - B or A \B, depending on your preference) between them. The two sets are stored and manipulate...
Paleolith asked 12/11, 2009 at 15:42
4
Solved
I have two lists of strings. How do I get the list of distinct values between them or remove the second list elements from the first list?
List<string> list1 = { "see","you","live"}
List&l...
Nysa asked 11/7, 2011 at 22:54
2
Solved
I have two lists about 1k people each list.
What I want to do is find who is leftover between the two.
$BunchoEmail = Import-Csv C:\temp\Directory.csv | Select-Object primaryEmail -ExpandProperty p...
Effectuate asked 22/7, 2021 at 19:29
1
Solved
Consider the following code:
#include <algorithm>
#include <iostream>
#include <list>
int main() {
std::list<int> v = {1, 3, 4};
std::cout << v.size() << std:...
Margaretamargarete asked 1/7, 2021 at 21:58
7
Solved
I have two files A-nodes_to_delete and B-nodes_to_keep. Each file has a many lines with numeric ids.
I want to have the list of numeric ids that are in nodes_to_delete but NOT in nodes_to_keep, i.e...
Alcoran asked 24/3, 2010 at 16:39
14
Solved
I have two data.frames:
a1 <- data.frame(a = 1:5, b=letters[1:5])
a2 <- data.frame(a = 1:3, b=letters[1:3])
I want to find the rows a1 have that a2 doesn't.
Is there a built in function for ...
Apuleius asked 3/7, 2010 at 12:4
3
Solved
I came across this example and I don't understand what it means.
(SELECT drinker FROM Frequents)
EXCEPT ALL
(SELECT drinker FROM Likes);
relations: Frequents(drinker, bar), Likes(drinker, beer...
South asked 10/2, 2015 at 13:19
7
Solved
I have two maps:
Map<String, Object> map1;
Map<String, Object> map2;
I need to receive difference between these maps. Does exist may be apache utils how to receive this difference?
F...
Karena asked 4/10, 2012 at 6:47
3
Solved
What is the difference between difference() and symmetric_difference() methods in python sets?
Northnortheast asked 15/6, 2018 at 7:57
2
Solved
I can't infer I can use std::set_difference from documentation, because it says sets should be ordered, which means they are not sets, but lists. Also all examples are about ordered lists, not sets...
Roofing asked 31/1, 2020 at 16:48
5
How to calculate the difference between two sets in Emacs Lisp? The sets should be lists.
The programm should be very simple and short, or else I won't understand it. I'm a newbee.
Thx
Nellanellda asked 7/6, 2012 at 21:4
3
Solved
I have created a script that loops through an array and excludes any variables that are found within a second array.
While the code works; it got me wondering if it could be simplified or piped.
...
Carter asked 9/10, 2019 at 15:34
3
Solved
What I want to do is more or less a combination of the problems discussed in the two following threads:
Perform non-pairwise all-to-all comparisons between two unordered character vectors --- The...
Glick asked 13/7, 2018 at 13:57
2
EXAMPLE DATA
v1 <- c("E82391", "X2329323", "C239923", "E1211", "N23932", "F93249232", "X93201", "X9023111", "O92311", "9000F", "K9232932", "L9232932", "X02311111")
v2 <- c("L9232932", "C2399...
Sheepdog asked 26/4, 2018 at 12:42
3
Solved
I have 2 factor columns, I want to create a third column which tells me what the second one has that the first does not.
It's very similar to this post but I'm having trouble going from a df to us...
Anyplace asked 18/4, 2018 at 1:0
3
Solved
Does someone have an idea about how can I remove everything in R except one object? Normally, to remove everything I code:
rm(list=ls())
So I tried:
rm(c(list=ls()-my_object))
but it didn’t w...
Cromagnon asked 16/11, 2016 at 2:12
10
Does the C++ STL set data structure have a set difference operator?
Disaffirm asked 12/11, 2008 at 13:50
3
Solved
If I have an object with two arrays containing unique values in it
{"all":["A","B","C","ABC"],"some":["B","C"]}
How can I find .all - .some?
In this case I am looking for ["A","ABC"]
Mullis asked 1/4, 2015 at 16:34
5
Is there a simple way to match all characters in a class except a certain set of them? For example if in a lanaguage where I can use \w to match the set of all unicode word characters, is there a w...
Limoges asked 26/6, 2013 at 18:28
2
Solved
Two matrices, A and B:
A = [1 2 3
9 7 5
4 9 4
1 4 7]
B = [1 2 3
1 4 7]
All rows of matrix B are members of matrix A. I wish to delete the common rows of A and B from A without sorting.
I h...
Athirst asked 12/8, 2010 at 12:33
3
Solved
In Python, how do I find the keys in one dictionary that do not have a counterpart in another dictionary? The practical problem is that I have a dictionary of people that enrolled and a dictionary ...
Miterwort asked 16/11, 2015 at 17:19
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