unique Questions
3
Solved
I have a DataFrame df_things that looks like this and i want to predict the quality of the classification before the training
A B C CLASS
-----------------------
al1 bal1 cal1 Ship
al1 bal1 cal1 S...
Cleanthes asked 30/12, 2018 at 16:5
3
Solved
There is a similar question for PHP, but I'm working with R and am unable to translate the solution to my problem.
I have this data frame with 10 rows and 50 columns, where some of the rows are ab...
Klehm asked 7/12, 2012 at 12:35
13
Solved
I have an .xls file with a column of data. How do I count how many unique values are contained in this column?
I have googled many options, but the formulas I've found always give me errors. For ex...
17
Solved
I've got almost the same question as here.
I have an array which contains aa ab aa ac aa ad, etc.
Now I want to select all unique elements from this array.
Thought, this would be simple with sort ...
3
Solved
From an array with three columns, I want to be able to just take a slice of data from all three columns where the values in the first column are equal to the values defined in above.
above = {1, 5,...
8
Solved
What is an efficient way of generating N unique numbers within a given range using C#? For example, generate 6 unique numbers between 1 and 50. A lazy way would be to simply use Random.Next() in a ...
4
Solved
I'm trying to filter such that once a unique number from a pair of number is found starting from the top of the matrix, any subsequent pair entry is removed from the matrix leaving only the the fil...
8
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I am curious what would be an efficient way of uniquifying such data objects:
testdata = [ ['9034968', 'ETH'], ['14160113', 'ETH'], ['9034968', 'ETH'], ['11111', 'NOT'], ['9555269', 'NOT'], ['15724...
Cauline asked 16/9, 2010 at 7:29
6
I am trying to build unique array of arrays such that whenever I have new array to add it should only add if it doesn't already exist in collection
E.g. store all unique permutations of [1,1,2]
Act...
Crandell asked 4/5, 2017 at 1:14
8
I need to create a list with one billion integers and they must all be unique. I also need this to be done extremely fast.
Creating a list and adding random numbers one by one and checking to see ...
13
Solved
df = pd.DataFrame({'Col1': ['Bob', 'Joe', 'Bill', 'Mary', 'Joe'],
'Col2': ['Joe', 'Steve', 'Bob', 'Bob', 'Steve'],
'Col3': np.random.random(5)})
What is the best way to return the unique values...
9
Solved
I write websocket chat.
How to generate unique id for user?
now i use this code:
id = new DateTime.now().millisecondsSinceEpoch;
is there any more neat solution?
Noman asked 21/3, 2013 at 13:15
94
Solved
I have an array of numbers that I need to make sure are unique. I found the code snippet below on the internet and it works great until the array has a zero in it. I found this other script h...
Veldaveleda asked 25/12, 2009 at 4:28
5
Solved
I have a dataframe which is has dimension of 2377426 rows by 2 columns, which looks something like this:
Name Seq
428293 ENSE00001892940:ENSE00001929862 AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...
Cherokee asked 3/12, 2014 at 9:4
17
Solved
I need some help with iterating through array, I keep getting stuck or reinventing the wheel.
values = [
{ name: 'someName1' },
{ name: 'someName2' },
{ name: 'someName1' },
{ name: 'someName1...
Tagalog asked 9/6, 2015 at 14:47
7
Solved
Given an array like the one below, I was wondering if there is an easy way to turn this array into an array with unique values only?
This is given:
numbers={5,5,4,3,1,4,5,4,5}
Turn it into a...
1
Solved
I have a table that looks like this:
CREATE TABLE IF NOT EXISTS list (
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
tok TEXT,
sid TEXT NOT NULL,
aid TEXT,
hash TEXT,
qtt SMALLINT,
p ...
Langmuir asked 23/11, 2023 at 20:42
24
I am having my validation rules for unique in the update section.
In inserting or adding the unique rule is 'Email' => array('unique:driver_details'), and it will check for the unique coloumn. ...
Swearingen asked 28/1, 2015 at 17:43
11
Solved
As I can understand documentation the following definitions are equivalent:
create table foo (
id serial primary key,
code integer,
label text,
constraint foo_uq unique (code, label));
create...
Sordino asked 8/5, 2014 at 13:12
6
Solved
I have a table that is supposed to keep a trace of visitors to a given profile (user id to user id pair). It turns out my SQL query was a bit off and is producing multiple pairs instead of single o...
Lucila asked 4/5, 2011 at 11:30
5
Solved
Array(96) [ {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, … ]
0: Object { id: 1, name: "PrimShal01", period: 3, … }
1: Object { id: 61, name: "TertDeep01", period: ...
Aalst asked 27/12, 2021 at 2:4
3
Solved
Why isn't lodash's _.unique returning unique objects when I pluck a field that is an object?
I'm using lodash's _.unique and it's not working as expected. I'm doing this:
uniqueByFocusIndex = _.unique(clickables, false, "focusIndex");
And as you can see in the image (look at the right),...
Faradic asked 5/7, 2014 at 23:0
4
Solved
After searching SO and other sites, I've failed to come up with conclusive evidence to how Facebook, Twitter and Pinterest generate their ID's. The reason this is needed is to avoid url collisions....
4
I want to randomly assign a vector of values, some of which are duplicates, to a smaller number of groups such that at least two and no more than four values are assigned to each group, and the sam...
64
Solved
Assuming I have the following:
var array =
[
{"name":"Joe", "age":17},
{"name":"Bob", "age":17},
{"name":"Carl"...
Magalymagan asked 28/2, 2013 at 1:33
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