Trending questions in Edureka Community

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Why do we need virtual functions in C++?

A virtual function is a base class member function that we expect to redefine in derived classes. In the base class, a virtual function is used to ensure that the function is overridden.  This is especially true when a pointer from a base class points to an object from a derived class. For example, consider the code below: class Base ...READ MORE

May 27, 2022 in Others by Damon
 • 4,960 points • 2,442 views
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1 answer

Change a HTML5 input's placeholder color with CSS

There are three implementations available: pseudo-elements, pseudo-classes, ...READ MORE

Jun 10, 2022 in CSS by Edureka
 • 12,730 points • 1,852 views
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W3.CSS vs Bootstrap: which is faster and better?

Which is faster, W3.CSS or bootstrap, and ...READ MORE

Jul 11, 2022 in CSS by Edureka
 • 13,730 points
edited Mar 4, 2025 • 534 views
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When to use IMG vs. CSS background-image?

You can transition a div's background image ...READ MORE

Jun 10, 2022 in CSS by Edureka
 • 12,730 points • 1,824 views
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java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver

I am getting this exception when I ...READ MORE

May 7, 2022 in Java by narikkadan
 • 86,360 points • 3,359 views
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Localhost giving an error "ERR_NAME_NOT_RESOLVED "

I created a folder in the "www" ...READ MORE

Jun 27, 2022 in PHP by narikkadan
 • 86,360 points • 1,156 views
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1 answer

Use of "this" keyword in C++ [duplicate]

Yes, it is optional and generally omitted.  However, it may be essential for accessing variables after they have been overridden in the scope: Person::Person() { int age; ...READ MORE

Jun 20, 2022 in C++ by Damon
 • 4,960 points • 1,499 views
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What does -f mean in bash

Luckily, the Bash Reference Manual is accessible ...READ MORE

Jun 10, 2022 in Linux Administration by Korak
 • 5,820 points • 1,846 views
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Sorting Characters Of A C++ String

Is there a built-in method for sorting characters in a string, or do I have to construct my own? for instance: string word = "dabc"; I would want to ...READ MORE

Jun 27, 2022 in C++ by Nicholas
 • 7,760 points • 1,088 views
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1 answer

What's the difference between class and interface in TypeScript? When do you use them?

A class is a blueprint of how ...READ MORE

May 31, 2022 in TypeSript by Nina
 • 3,060 points • 2,273 views
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Online java coding test: compile submitted java code in nodejs

Given that the user's source code will ...READ MORE

Jun 13, 2022 in Node-js by Neha
 • 9,020 points • 1,692 views
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json_decode to array

I want to decode a JSON string ...READ MORE

Jun 3, 2022 in PHP by Kichu
 • 19,040 points • 2,121 views
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1 answer

Certifications for C# Developers

Try this link: https://docs.microsoft.com/en-us/learn/certifications/browse/?resource_type=certification Here you can see ...READ MORE

Jul 4, 2022 in C# by krishna
 • 2,820 points • 1,276 views
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What's the difference between :: (double colon) and -> (arrow) in PHP?

I know that there are two distinct ways ...READ MORE

Jun 14, 2022 in PHP by narikkadan
 • 86,360 points • 1,558 views
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Why 'nrow()' function doesn't seem to work within 'summarise()' function?

See the code below: library(dslabs) \sdata(gapminder) gapminder percent > ...READ MORE

Jun 30, 2022 in Data Science by avinash
 • 1,840 points • 990 views
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Sending email with PHP from an SMTP server

I get an error: SMTP server response: 530 ...READ MORE

Jun 25, 2022 in PHP by narikkadan
 • 86,360 points • 1,225 views
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Why PHP variables start with a $ sign symbol?

Why should we write $var_name = value; ...READ MORE

Jun 23, 2022 in PHP by narikkadan
 • 86,360 points • 1,309 views
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1 answer

Querying for the second largest salary

general SQL query should be as follows: select ...READ MORE

Jun 16, 2022 in Others by polo
 • 1,480 points • 1,548 views
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Send str() output to View()

A dataset containing 313 variables is the ...READ MORE

Jun 30, 2022 in Data Analytics by avinash
 • 1,840 points • 985 views
0 votes
1 answer

How can I define colors as variables in CSS?

CSS does not use variables. You can, ...READ MORE

Jun 21, 2022 in CSS by Edureka
 • 12,730 points • 1,442 views
0 votes
1 answer

Jquery and Menu and logo

Seems your anchor tag is not visible ...READ MORE

Jun 22, 2022 in Web Development by rajatha
 • 7,680 points • 1,283 views
0 votes
0 answers

How to detect the OS from a Bash script?

I would like to keep my .bashrc ...READ MORE

Jun 22, 2022 in Linux Administration by Korak
 • 5,820 points • 1,322 views
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0 answers

How to send control+c from a bash script?

I'm starting a number of screens in ...READ MORE

Jun 16, 2022 in Linux Administration by Rahul
 • 3,380 points • 1,594 views
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0 answers

Android facebook login not working with installed Facebook app

Session.openActiveSession(this, true, new Session.StatusCallback() { ...READ MORE

Jun 22, 2022 in Others by nisha
 • 2,210 points • 1,337 views
0 votes
1 answer

Connecting REST API to Tableau

The REST API is not a data ...READ MORE

Apr 5, 2022 in Tableau by Neha
 • 9,020 points • 4,764 views
0 votes
1 answer

How do I add options to a DropDownList using jQuery?

Without using any extra plugins, var myOptions = ...READ MORE

Jun 21, 2022 in JQuery by rajatha
 • 7,680 points • 1,325 views
0 votes
1 answer

How do I format date in jQuery datetimepicker?

jquery datepicker format” Code Answer's $('#timePicker'). datetimepicker({ // dateFormat: ...READ MORE

Jun 3, 2022 in JQuery by Edureka
 • 13,690 points • 2,104 views
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Can you use "cin" with string?

To enter a string, I was instructed to use gets(str) rather than cin.  In the programme below, though, I can use cin perfectly well.  Could you please tell me if you can use cin?  Please accept my apologies for my poor English.  The application allows you to enter up to five names and then print them on the screen. The code is as follows: #include <iostream> #include <string.h> using namespace std; int main() { ...READ MORE

Jun 27, 2022 in C++ by Nicholas
 • 7,760 points • 1,069 views
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0 answers

Laravel/ MSSQL (AWS RDS) General error: 20018 Unicode data

I'm using SQL Server with a Laravel ...READ MORE

Apr 25, 2022 in AWS by Aditya
 • 7,680 points • 2,230 views
0 votes
1 answer

How to use AWS S3 CLI to dump files to stdout in BASH?

All file objects must have their contents ...READ MORE

Mar 24, 2022 in Others by gaurav
 • 25,260 points • 5,239 views
0 votes
1 answer

Plot correlation matrix using pandas

Just use pyplot.matshow() from matplotlib: import matplotlib.pyplot as plt plt.matshow(dataframe.corr()) plt.show() If df.corr() ...READ MORE

Apr 28, 2022 in Python by narikkadan
 • 86,360 points • 3,719 views
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0 answers

Developing reporting engine in nodejs

this may be a little clean and ...READ MORE

Jun 27, 2022 in Node-js by Vaani
 • 7,070 points • 1,102 views
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Sync contacts using Google Contacts API version 3.0 and NodeJS' Passport

I want to sync Google contacts with ...READ MORE

Jun 22, 2022 in Node-js by Vaani
 • 7,070 points • 1,306 views
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1 answer

PhpMyAdmin not working on localhost

In order to answer your question, you ...READ MORE

Feb 8, 2022 in Others by Rahul
 • 9,690 points • 7,066 views
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1 answer

Android - How can I find location using just PINCODE?

1 You can find a location (latitude, longitude) ...READ MORE

Jun 1, 2022 in Others by nisha
 • 2,210 points • 2,208 views
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0 answers

Get URL query string parameters

What is the best way to get ...READ MORE

Jun 24, 2022 in PHP by narikkadan
 • 86,360 points • 1,249 views
0 votes
1 answer

How to add multiple lines in a file using Ansible playbook?

Hi@akhtar, You can update your file using lineinfile ...READ MORE

Sep 16, 2020 in Ansible by MD
 • 95,460 points • 29,085 views
0 votes
1 answer

Why is "using namespace std;" considered bad practice?

This has nothing to do with performan ...READ MORE

Jun 1, 2022 in C++ by Damon
 • 4,960 points • 2,189 views
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0 answers

No US HAWAII time zone in Momentjs or nodejs

How can I use Momentjs to adjust ...READ MORE

Jun 23, 2022 in Node-js by Vaani
 • 7,070 points • 1,269 views
0 votes
0 answers

I am unable to launch Ec2 more then two instances getting error failed may i know the reason ?

Hi team,    I am unable to launch  Ec2 ...READ MORE

Jul 11, 2022 in AWS by anonymous
edited Mar 4, 2025 • 473 views
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0 answers

How to force overriding a method in a descendant, without having an abstract base class

This is my code using System; using System.Collections.Generic; using System.Linq; using ...READ MORE

Jun 11, 2022 in C# by krishna
 • 2,820 points • 1,784 views
0 votes
0 answers

Consumer is not consuming messages, but service is running, please help me on this

Consumer is suddenly stopped consuming messages but ...READ MORE

Jul 6, 2022 in Apache Kafka by KsP
edited Mar 4, 2025 • 713 views
0 votes
1 answer

wildcard * in CSS for classes

Yes you can do this. *[id^='term-']{ ...READ MORE

Jun 21, 2022 in CSS by Edureka
 • 12,730 points • 1,546 views
0 votes
1 answer

Making text in one column italics with CSS

What you can do is using the td:nth-child() to ...READ MORE

Jun 17, 2022 in CSS by Edureka
 • 12,730 points • 1,480 views
0 votes
0 answers

How to detect the OS from a Bash script?

I would like to keep my .bashrc and .bash_login files in ...READ MORE

Jun 21, 2022 in Linux Administration by Korak
 • 5,820 points • 1,341 views
0 votes
1 answer

Style disabled button with CSS

I think you should be able to ...READ MORE

Jun 13, 2022 in CSS by Edureka
 • 12,730 points • 1,650 views
0 votes
0 answers

What is the best IDE for PHP?

I use Notepad++ for code editing, I need an ...READ MORE

Jun 23, 2022 in PHP by narikkadan
 • 86,360 points • 1,281 views
0 votes
1 answer

Position a CSS background image x pixels from the right?

The attribute border can be used as ...READ MORE

Jun 10, 2022 in CSS by Edureka
 • 12,730 points • 1,798 views
0 votes
1 answer

Is there an official logo of C#

There isn't an official logo, as far ...READ MORE

Jun 13, 2022 in C# by krishna
 • 2,820 points • 1,696 views
0 votes
0 answers

How can I rbind multiple single-value rows to my data.frame?

0 What follows functions as expected: Data.frame(c(1, 2, 3)) ...READ MORE

Jun 24, 2022 in Data Analytics by Avinash
 • 1,260 points • 1,216 views
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