As a language that aims for safety and performance, Rust provides a powerful data structure called HashSet that provides a fast and efficient way to store and retrieve unique values. HashSet is optimized for scenarios where you need to check for the presence of a value and avoid duplicates, making it a popular choice among… Read More How to apply function that returns Result to each element of HashSet in Rust
I’m trying to add "pop-up" class to my "turnGreen" but turnGreen.classList is undefined. How can I handle this error? function turnGreen(cornerNumber) { const selectedCorner = "corner-" + cornerNumber; const turnGreen = document.getElementsByClassName(selectedCorner); turnGreen.classList.add("pop-up"); } <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8" /> <meta http-equiv="X-UA-Compatible" content="IE=edge" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <link rel="stylesheet" href="style.css" />… Read More Error: Cannot read properties of undefined
I need to add to one to the variables at the bottom every time the user choses the language they prefer. If you can help me complete this tally it would be very helpful. When I run the script all I get is a 0.0000 for all variables at the bottom. #include <stdio.h> int main()… Read More How to keep track of a users input in C/C++
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I have the following dataset: I have been trying to build a contingency table, by using the following code: library(readr) library(tidyverse) library(magrittr) data1 %>% select(blockLabel, trial_resp.corr, participant) %>% group_by(blockLabel, trial_resp.corr, participant) %$% with(., table(blockLabel, trial_resp.corr, participant)) , , participant = pilot01 trial_resp.corr blockLabel 0 1 auditory_only 0 12 bimodal_focus_auditory 1 71 bimodal_focus_visual 3 69 divided… Read More How to add rows and columns to an outcome got by table() function
I’m creating a booking reference for the user to download after successfully making a booking. It looks like this in the browser: However, after using html2canvas to get a screenshot of the component in React, I get this: I suspect the issue has to do with the fact that the static map’s use is protected… Read More html2canvas failing to capture Google static map
After an hour exploring Stack Overflow, I’m more confused than ever (and based on the number of posts, I’m probably missing something painfully obvious). All I want to do is add n minutes to an existing date/time string (formatted as $start = ‘2022-09-10T09:00:00-07:00’) WITHOUT losing the time zone. Based on my reading, it looks like… Read More PHP Add n Minutes to Time/Date string and RETAIN timezone
Why you can use += in a swift playground but not in the swift app? So – where is the problem? If I write += in the app – there comes the error ‚Type ‚()‘ cannot conform to ‚View‘‘ App: import SwiftUI struct ContentView: View { var body: some View { var addUp = 0… Read More Why += works in a swift playground but not in the swift app?
whenever I run following code of adding two lists in python below mentioned error appears def add_lists(L1, L2): R = [] for i in range(0, len(L1)): R.append(L1[i]+L2[i]) return R L2 = [3, 3, 3, 3] L1 = [1, 2, 3, 4] add_lists(L1, L2) print("Resultant list of: ", str(L1), ‘& ‘ + str(L2), ‘is’, R) this… Read More Function of adding two lists in Python
I have a table with two columns A and B. I want to create a new table with two new columns added: X and Y. These two new columns are to contain data from column A, but every second row from column A. Correspondingly for column X, starting from the first value in column A… Read More R adding columns and data