143 questions
0
votes
3
answers
51
views
rxjs take operator is not working correctly
I am going to set first item's id as selected id in the initial loading.
For this, I used rxjs take operator, but it is not working. Please help me find why it is not working.
ngOnInit(): void {
...
2
votes
1
answer
48
views
Why do JS generators terminate after a take() bottoms out?
I got tripped up by some behaviour of JS generators today. Iterators continue producing numbers after an IteratorHelper gotten by calling take() bottoms out, but generators, which should conform to ...
- 23
1
vote
1
answer
48
views
set take_profit = 20 pips on metatrader5 in python
I want to set an order by MetaTrader5 in Python
I want to enter the amount of profit equal to 20 pips when setting the order
How can I do this?
- 39
0
votes
0
answers
9
views
How to take a part of the shape that built by the curve?
I am a newbie in mathematica so I would like to ask any help for this probloem. I plotted this curve
Plot[1/515.56^21/((1 - (x/6.55)^2)^2 + (0.02x/6.55)^2), {x, 5.5,
7.5}, PlotRange -> {0, 0.01}].
...
1
vote
1
answer
107
views
Is there a way to make this formula run much faster?
I have a formula with quite a few moving parts, taking data from very large datasets. It is so extensive that it is damn near crashing my computer I do not have the option of adding helper columns or ...
- 127
-2
votes
2
answers
100
views
For-loop Freezes When Encountering Iterator That Was Ended Early. Is This Normal?
I tried running the below code on rustc 1.72.0 with cargo run :
fn main() {
let ea = (1..).filter(|x| *x < 10).take(10);
// Initialize a counter
let mut count = 0;
println!("...
- 91
-1
votes
1
answer
756
views
Excel, using the Take Formula and ignore blank rows
So I have an excel spreadsheet where I will copy data into. Then on that sheet I will have several other formulas combining text and so on. On a second sheet I want to take all the rows and certain ...
- 309
1
vote
0
answers
276
views
EF Core - Oracle Take and Skip
How to use Skip and Take with Oracle and EF Core?
This query...
var q = db.Set<T>()
.FilterBy(filtri)
.Skip(0)
.Take(10);
...Generates this wrong query (ora-00933 sql command ...
- 614
0
votes
1
answer
222
views
How to use COUNTIF and TAKE function in Excel
I'm new here.
I have a problem with an Excel function.
As the result of take(filter(...)) in Excel I have this list:
So, I want to apply COUNTIF there like: COUNTIF(TAKE(FILTER(..))>74). But when ...
0
votes
2
answers
176
views
Are there better ways to split arrays into smaller arrays?
I have a program that will create orders for a bunch of orders. However API has limitation that if I wanna do that I got to do it 10 at a time
If orderList.Count > 10 Then
Dim FirstTwenty = ...
- 33k
0
votes
0
answers
89
views
How to take multiple images and still keep the quality on Android java using ImageReader?
I am trying to take multiple images on Android java using ImageReader. It's working fine if the user only takes a single image. But if they take multiple images at the same time (click the button ...
- 1
0
votes
1
answer
378
views
Java thread hangs after CompletionService.take()
I've got simple test code:
public static void main(String[] args) {
CompletionService<Integer> cs = new ExecutorCompletionService<>(Executors.newCachedThreadPool());
cs.submit(new ...
- 8,027
0
votes
3
answers
132
views
Elegant way to rotate items inside of array or list in c#?
This is a general array question but, for my case, it is a list of strings.
Given: [a, b, c, d, e, f, g, h] and an item inside of the collection, say f.
Output: [f, g, h, a, b, c, d, e]
I can use ...
- 314
2
votes
1
answer
156
views
`take n (take n xs) ≡ take n xs` for `Vec` in Agda
I want to prove a nearly trivial property of the take function for Vec in Agda.
open import Data.Vec
open import Data.Nat
open import Relation.Binary.PropositionalEquality
take-idempotent : ∀ n (xs : ...
- 21
2
votes
1
answer
750
views
Ngrx store take(1), but reset after logout/login
So, imagine you have an ngrx store with a list of books.
When you log in to your profile page you fetch your books using:
this.store.dispatch(getBooks());
Which will trigger the effect:
getBooks$ = ...
0
votes
0
answers
133
views
Why does the Take method ignore ordering methods in C# Linq?
I have a code snippet like this:
IReadOnlyList<ResultDTO> res = Repository.GetAll()
.Skip(input.SkipCount)
.Join(UserManager.Users, d=>d.CreatorUserId, c=> c.Id,
(d, c)=>d.MapToDto(c....
- 3,972
0
votes
1
answer
281
views
How Scala List take() method can change a val type?
I just found a strange behavior with take() method in a String.
Here is my code:
val ji = Array("134","231","2321")
var t = ji
var i = ji(1).take(2)
i = i + 8
t(1)= i
...
0
votes
1
answer
591
views
How to use take and skip for bulk data entity framework
In my database have 1 million member data. and need to load those data to grid. I have following code.
public List<MemberDto> GetMembers(string By = "", string searchTerm = ""...
- 383
0
votes
1
answer
272
views
Linq take returns zero elements from OData collection
I can't wrap my brain around this, I don't get why this behaves likes this.
I have made an OData query that returns a collection of 175 items
from c in navClient.Item where c.No != "" &&...
- 408
2
votes
2
answers
120
views
Take while running total smaller than value
I am trying to generate a list of even integers while the sum of the items in the list is less equal a given number.
For instance if the threshold k is 20, then the expected output is [0;2;4;6;8]
I ...
- 125
2
votes
1
answer
558
views
What is the use of Take method ? Flutter & dart
take-->What role does it play (flutter and Dart)
class Ticker {
Stream<int> tick({int ticks}) => Stream.periodic(Duration(seconds: 1), (x) {
return ticks - x - 1;
}).take(...
2
votes
4
answers
394
views
clojure split collection in chunks of increasing size
Hi I am a clojure newbie,
I am trying to create a function that splits a collection into chunks of increasing size something along the lines of
(apply #(#(take %) (range 1 n)) col)
where n is the ...
- 7,173
0
votes
1
answer
96
views
How do I take the last ten elements from an rx observable?
I have an Observable that combine three other Observables then emit a single array. From this merged array I would like to take the last 10 objects. But I think I take the last ten arrays instead. ...
- 948
1
vote
0
answers
360
views
Waiting for multiple actions before proceeding in redux-saga
Assume that you have a saga that fetches a list of items. For each fetched item you also need a companion object.
The pseudo-code below fetches some users from an API and for each user is emitting a ...
- 3,221
0
votes
0
answers
459
views
Why use while(true) with .take with a blockingcollection?
I have been looking into using blockingcollection. I found this article very helpful
Although, he is using "tasks" for multi threading purposes, I don't think I need this. But anyways, the ...
- 179
1
vote
0
answers
189
views
С# LINQ IQueryable Take
I tried to take only 1000 entities from about 7000. When Queryable converted to list, it is more then 1000 entities returned.
IQueryable<MyEntity> query = {some query};
query = query.Take(1000);
...
0
votes
1
answer
75
views
Sort and Take N from dictionary value in C#
I have a dictionary in C#.
Dictionary originalMap = new Dictionary<string, List<CustomObject>>();
originalMap contents:
"abc" -> {CustomObject1, CustomeObject2, .....
- 1,003
1
vote
2
answers
438
views
Retrieving Values from a Seq based on a condition
I have the below Seq with me
scala> var al = Seq((1.0, 20.0, 100.0), (2.0, 30.0, 100.0), (1.0, 11.0, 100.0), (1.0, 20.0, 100.0), (1.0, 10.0, 100.0),(2.0,9.0,100.0))
al: Seq[(Double, Double, ...
- 383
0
votes
1
answer
164
views
ASP.Net MVC Paging returns one large resultset instead of splitting resultset into pages
I am using Paging in my View and originally my @model was of type PagedList.IPagedList but I was having issues posting back the IPagedList interface back to controller, therefore, I found a post that ...
- 1
3
votes
1
answer
2k
views
get the size of dataset after applying a filter from tf.data.Dataset
I wonder how I can get the size or the len of the dataset after applying a filter. Using tf.data.experimental.cardinality give -2, and this is not what I am looking for!! I want to know how many ...
- 453
4
votes
2
answers
453
views
How does Ruby enumerator terminate iteration?
Friends, please I need help with this explanation: In the Ruby code below, what condition termites the loop do? It's supposed to be an infinite loop, but, how does it terminate?
# Ruby code
fib = ...
- 311
0
votes
1
answer
41
views
How to unsubscribe using take operator?
How can I unsubscribe from this using take operator?
constructor(/*params*/) {
let id = this.route.snapshot.paramMap.get('id');
if (id) this.productService.get(id).valueChanges().subscribe(p =>...
- 45
2
votes
2
answers
160
views
Angular/RxJs - Unsubscribing dependent http services using take(1)?
--Component.ts--
getGenCoreLabs() {
this.checkinService
.getLaboratories()
.pipe(
switchMap(outerResp => {
const total = outerResp.headers.get(outerResp....
- 131
1
vote
2
answers
6k
views
How do i implement the take function in Haskell using takeWhile?
So in my exam i had to implement the take function in Haskell using the takeWhile.
How can i do this?
What would be the condition in takeWhile so that it will only take the required number of ...
- 31
1
vote
1
answer
1k
views
Writing tests for RxJS that uses retryWhen operator (understanding difference from retry operator)
I'm trying to write tests for the following function that uses retryWhen operator:
// some API I'm using and mocking out in test
import { geoApi } from "api/observable";
export default function ...
- 13.9k
0
votes
1
answer
131
views
Take elements of an array based on indexes in another array
I have an array of values on one side:
A = np.arange(30).reshape((3, 10))
Out: array([[ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9],
[10, 11, 12, 13, 14, 15, 16, 17, 18, 19],
[20, ...
- 53
-1
votes
1
answer
675
views
angular resolver with ngrx effect and take operator
i have a route in my app that uses a resolver to fetch data (array of objects) from the db.
the resolve function check if the data exist in the store state (if the array has length), and if not it ...
- 111
1
vote
2
answers
611
views
LUA: Looking for a specific table by its variable
I'm currently starting work on a text adventure game in Lua--no addons, just pure Lua for my first project. In essence, here is my problem; I'm trying to find out how I can do a "reverse lookup" of a ...
0
votes
0
answers
300
views
Java's BlockingQueue Take Policy
In a multithreaded environment, what is the policy regarding the take() method (removing an Object) for the various implementations of Java's BlockingQueue (for example LinkedBlockingQueue)?
Does the ...
0
votes
1
answer
681
views
How can I get the following items from a list with entity framework?
I have a very large list and I want to extract in parts of 50 items for which I will implement the following:
try
{
using (var context = new ccoFinalEntities())
{
return context.sales
...
- 329
2
votes
2
answers
557
views
Scala - List take - OrElse - with default value
I am trying to implement a way to take n from a Scala List, but if n > list.length, specify a default value. Something like takeOrElse.
Say, val l = List(4, 6, 10)
val taken = l.takeOrElse(5, 0) /...
- 1,312
0
votes
1
answer
433
views
Take user input through tkinter, create barcode from that input
I want to take user input through tkinter gui. When the user confirms his entry by pressing a button, I want to create a barcode from that input.
The barcode will be saved as an image and it will be ...
- 149
2
votes
2
answers
782
views
Numpy: Combine list of arrays by another array (np.choose alternative)
I have a list of numpy arrays, each of the same shape. Let's say:
a = [np.array([[1, 2, 3],
[4, 5, 6],
[7, 8, 9]]),
np.array([[11, 12, 13],
[14, 15, ...
- 468
5
votes
1
answer
3k
views
Take is not a function : Angular 7 | Observable.take throws runtime error
I am building a shopping cart and I have used a shopping cart service in which I am assigning the quantities to a product/adding a product to the cart. Is there any other way than to use take for ...
1
vote
1
answer
36
views
take(n) doesn't have effect after groupBy in RxJava2
I am trying to group several model instances by name and then use take(n) to take only certain items per group, but somehow the take has no effect on GroupedObservable. Here is the code
Let's assume ...
- 1,488
2
votes
4
answers
148
views
Is the take function well defined on a Scala Map?
Is the take function safe to use on a Scala Map? I thought that Maps were unordered, so that myMap.take(2) would return 2 random elements of myMap. But testing on the interpreter makes me feel that it ...
- 297
0
votes
2
answers
1k
views
How to get the first n elements of string sequence with split.take? VB .net
I created a .dll plugin for both AutoCAD and CIVIL 3D.
I'm trying to retrieve the first elements of these sequences:
"Autodesk AutoCAD 2019 - [Drawing 1]" I just want to obtain "Autodesk AutoCAD ...
- 85
0
votes
1
answer
55
views
faster take n record in linq
please see this query
return ContextDb.TestTbl.AsNoTracking().Where(x =>
x.Field1 == newsPaperGroupId).OrderByDescending(x => x.ShowDateTime).Take(count).ToList();
Is it fetch ...
- 27
0
votes
1
answer
95
views
How to refactor this Android TakePicture code in Kotlin?
I was following the example of 'Take Picture' from Android website (converting the code into Kotlin as I go along). It works all fine when everything is in one class. I then decided to delegate the ...
- 23
2
votes
4
answers
2k
views
Implement the take function with list comprehension
How would you implement take with a list comprehension?
My approach so far:
take2 :: (Num i, Ord i) => i -> [a] -> [a]
take2 n xs = [x | x <- xs, [x..n]]
- 41