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Mastering Development

Vaadin: How to update a css style for a component from another thread?

So I have this issue with Vaadin Flow 14, I have a component that uses both position: static and position: absolute in it’s CSS. It also have a cool animation and I needed to use both positions so it doesn’t look weird, can take all the screen and can also be scrollable. It’s behavior is […]

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Mastering Development

How to wrap a horizontal UIScrollView so it works for SwiftUI

I’m new to SwiftUI, I need to use a horizontal UIScrollView in an SwiftUI app, but I can’t manage to get it to render the views properly when I tried to wrap it. The views I put inside just disappear. Is there a way to fix a wrapped UIScrollView to Horizontal scroll only? Here is […]

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Mastering Development

R simplify nested for loop which removes rows from a global variable

The program should remove rows from pts. I would like to use nested operator %:% instead of nested for loops if possible, but I’m not sure how to use rbind/append in a removing way (eg. if x=0.1,y=0.15 removes 3 rows and x=0.5,y=-0.25 removes 3 different rows then the output at the end will have at […]

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Mastering Development

Exception of type ‘System.OutOfMemoryException’ was thrown while Export to Excel using EPPlus in C# windows application

I am getting error while export to excel large amount of data using EPPLUS library in C# windows application. Dataset contains one table with 120 columns and more than 200k rows. It is throwing ‘System.OutOfMemoryException’. protected void GetDailyTransactionDump_New() { try { DataSet dsGetData = new DataSet(); Hashtable ht = new Hashtable(); string Date = “”; […]

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Mastering Development

How to count the number of ordered sequence in a vector in R

I have the following data set as an example. Data<-c(“a”,”d”,”c”,”b”,”d”,”a”,”d”,”b”,”c”,”b”,”a”,”b”,”d”,”c”,”b”,”a”,”c”,”d”,”d”,”c”) I need to find out how many times a < b < c < d, all possible combinations. I have created a loop (using 4 IF functions) but it takes long time when we have large data set. With this loop the answer is 47 […]

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Mastering Development

Convert an array to a hash table or hash map

I have 2 functions: smalltalk and do_smalltalk. smalltalk will check if the user input (intent) matches a word given in the array. If there is a match, the program will move on to do_smalltalk. My question is, how do I change this to a hash table or hash map data structure so that I can […]

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Mastering Development

ModalPopup, UpdatePanel, Javascript “Object expected” Error with Internet Explorer

A page in my asp.net web app has a modal popup which contains a listbox that must be populated on the fly. The page contains a treeview control; right clicking a node on the treeview calls up a context menu; and if the user clicks on “Add Pretask”, the popup form appears, listing items which […]

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Mastering Development

Cannot implicitly convert type ‘System.Action

I made a C# console math project where the user answers addition, subtraction, multiplication, division, power or square-root questions based on the difficulty they choose! Here is my full code: using System; using System.Collections.Generic; using System.Linq; namespace mathstester { class Program { public enum UserDifficulty { Easy, Normal, Hard } public enum MathOperation { Addition […]

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CMS Magento Mastering Development

How i can add a div inside `product-image-container` in magento to catalog pages

I want to add a New <div> in inside class=”product-image-container” in Magento 2 I have searched and found that this class is rendered like this $productImage = $block->getImage($_product, $imageDisplayArea); <?= $productImage->toHtml() ?> How I can do this task please let me know thank you

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Mastering Development

How do I make 10 http requests simultaneously?

I have 10 requests val reqTemplate = quickRequest.post(uri”http://localhost:8280/delay/1″) val requests = for {i <- 1 to 10} yield { reqTemplate.body(s”{test:$i}”) } How do I send them simultaneously? I tried val responseTasks = reqs.map(SttpClient.send) val allResponsesTask: Task[List[Response[String]]] = ZIO.collectAllPar(responseTasks) val appLogic: Task[Unit] = for { resps <- allResponsesTask resp <- resps _ <- putStrLn(resp.toString()) _ <- […]