How do you avoid overwriting an array if a number is randomly generated twice? I am creating a simple javaFX program where a user can create or search for an account. The account details need to be stored at a random position within the array. My biggest challenge is not knowing how to prevent my… Read More Avoid overwriting randomly generated index in an array
I have a dataset containing some data obtained after a correction that should be merged with the primary dataset. I need a way to overwrite the old values with the new ones, but I don’t know how. Here is an example of what I have: Data <- data.frame(ID = c("Gfa","Gfa","Gfa","Pka","Pka","Pka"), Treatment = c("Control","T1","T2","Control","T1","T2"), Value =… Read More How to overwrite/replace specific rows in R?
function myFunc() { var cart = document.createElement(‘div’); document.body.appendChild(cart); cart.id = “cart”; var btn1 = document.getElementById(‘btn1’); var btn2 = document.getElementById(‘btn2’); var btn3 = document.getElementById(‘btn3’); var btn4 = document.getElementById(‘btn4’); btn1.onclick = function() {item_1_cart()}; btn2.onclick = function() {item_2_cart()}; function item_1_cart() { btn1.addEventListener(“click”, add_cart) function add_cart() { btn1.onclick = cart.innerHTML; cart.innerHTML = “hi”; } } function item_2_cart() { btn2.addEventListener(“click”,… Read More when i clicked on add to cart the item is text is priniting. when clicked on other add to cart button the text is overwriting
I want an object to overwrite itself using a setter. Unfortunately it does not work with my script. Probably it is because "this" cannot stand alone. Is there another way to solve this? class myClass { set updateObj(value) { this = value // how to overwrite the object itself? "this" doesn’t work .. } }… Read More How can an object overwrite itself using setter?
I’m just starting to learn Java and I just got to the if-else-else if statements section on CodeAcademy. I tried using the if else statement in a method, but I’m not receiving the variable value when I call it, only the if-else statement. I’m guessing this is a very small mistake. (This is my first… Read More if-else-else if statements in Java (codecademy)
I want to calculate the average value of every three lines of data in the text. The error is as follows： Traceback (most recent call last): File "/home/code/test1.py", line 7, in <module> lines = sum(lines[i:i+3])/3 TypeError: ‘float’ object is not subscriptable with open(‘/home/data/NB_accuracy_score.txt’, ‘r’) as f: lines = f.readlines() lines = [line.strip().split(‘\t’) for line in… Read More TypeError: 'float' object is not subscriptable–
I have the following array const arr = [{ agrupacion: "Total país", valor: "81.8", year: 2015 }, { agrupacion: "Total país", valor: "86.4", year: 2016 }, { agrupacion: "Total país", valor: "67.3", year: 2017 }, { agrupacion: "Total país", valor: "70.8", year: 2018 }, { agrupacion: "Total país", valor: "67.6", year: 2019 }, { agrupacion:… Read More array of objects group them by a specific key
I use json file to configure my program arguments and use flag package to configure the same arguments. When some argument parsed by json file and flag at the same time, I wish use the arguments parsed through flag. The trouble is that the json file path is also parsed through flag. The json path… Read More How to skip existing fields when unmarshal json in golang?
I’m trying to create a file to send information to another process. But when I reach the send_file function, I get –>Error in fgets():: Bad file descriptor. Can someone help me address this matter, please? I’m stuck. #include <stdlib.h> #include <stdio.h> void send_file(FILE *fp, int sockfd){ char data[SIZE] = {0}; if (fgets(data, SIZE, fp) ==… Read More Bad file descriptor fgets
In writing dataframe to Excel spreadsheet, I want the file to have no border on the first row and column width to be auto adjusted. With the old package xlwt and xlrd, I can read the file from Pandas produced, to a new file with no border on the header. But it’s .xls (not .xlsx)… Read More Dataframe to Excel, with no border formatting, and auto column width