[Solved] in java, why abstract class Number can be instantiated? [duplicate]

[ad_1] You’re not instantiating a Number. You’re instantiating a Number[]. These are two completely different objects. You can generally expect to be able to instantiate an array of any type, even types that you can’t directly instantiate yourself. You can populate these arrays through type inheritance and the is-a relationship. For example, with the above, … Read more

[Solved] How to play this python code in php?

[ad_1] I created a function to pass all url calls through the curl getcurl($url), making it easier to read the pages and their contents. We use a kind of loop that will go through all the sub-links you have on the page, until you get to the final page, when it arrives there, if($link) is … Read more

[Solved] Why my Firebase Realtime Database is only saving 1 user [closed]

[ad_1] Firebase allows to store information of multiple users in firebase realtime database but only as authenticated users. I think you have not signout from your first user. That is why, its saving only one user. Have you created a signout button and have you done something like this : FirebaseAuth mAuth = FirebaseAuth.getInstance(); mAuth.signOut(); … Read more

[Solved] Print string in maxlines 3 and width parametar, I’m not understand all, can someone help me

[ad_1] package com.TnationChallange; import java.util.ArrayList; import java.util.List; public class Main { public static void main(String[] args) { for (String part : getParts(“limited screen space to display information”, 7, 3)) { System.out.println(part); } } private static List<String> getParts(String string, int partitionSize, int maxLine) { List<String> parts = new ArrayList<String>(); int len = string.length(); for (int i … Read more

[Solved] how to show and hide the div on button click using jquery [duplicate]

[ad_1] Try this $(document).ready(function(){ $(“button”).click(function(){ $(“#toggle”).toggle(); }); }); div { height:200px; width:200px; background-color:red; } <!DOCTYPE html> <html> <head> <script src=”https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js”></script> </head> <body> <div id=”toggle”> </div> <button>Toggle between hide() and show()</button> </body> </html> [ad_2] solved how to show and hide the div on button click using jquery [duplicate]

[Solved] Parse string in Powershell and create a table

[ad_1] I have to admit this is a bit excesive use of .replace() but there isn’t much to work with: $mystring= ” S: Title = test S: Title = test2 S: Title = test3 S: Title = test4 TE: 2019-01-19T00:00:00Z TE: 2019-01-20T00:00:00Z TE: 2019-01-22T00:00:00Z TE: 2019-01-23T00:00:00Z ” $MyString.trim().replace(” S: Title = “,”,”).replace(“T00:00:00Z TE: “,”,”).replace(“TE: “,””).replace(“S: … Read more

[Solved] SQL help on self Join query

[ad_1] Looks like you just need : SELECT p.paymentid, p.paymentdate, c1.name payment_customer, c2.name customer FROM payment p INNER JOIN customers c1 ON p.cust_id = c1.paymentcustid INNER JOIN customers c2 ON p.cust_id = c2.custid; 0 [ad_2] solved SQL help on self Join query

[Solved] Frequency table with common values of 5 tables

[ad_1] Here’s my solution using purrr & dplyr: library(purrr) library(dplyr) lst1 <- list(mtcars=mtcars, iris=iris, chick=chickwts, cars=cars, airqual=airquality) lst1 %>% map_dfr(select, value=1, .id=”df”) %>% # select first column of every dataframe and name it “value” group_by(value) %>% summarise(freq=n(), # frequency over all dataframes n_df=n_distinct(df), # number of dataframes this value ocurrs dfs = paste(unique(df), collapse=”,”)) %>% … Read more

[Solved] Write a JavaScript conditional statement to find the sign of product of three numbers. Display an alert box with the specified sign

[ad_1] Input elements have a value not, innerHTML Even if you would have corrected that, you will not have values, since you did not assign them to any variable For number only input use the number type, this will prevent someone from entering not numeral characters (in all modern browsers) document.getElementById(‘check-value’).addEventListener(‘click’, (e) => { const … Read more