Tutorial by Examples: r

Uninstall-Module -Name <Name> -RequiredVersion <Version>

adb is a command line tool for communicating with an emulator instance or connected device. It allows for installing and debugging apps, transferring files, as well as a variety of other interactions with the connected emulator or device. The ADB system consists of a client, which sends commands fro...

This function will display the error message supplied to it using the following error template: Path - application/errors/error_general.php The optional parameter $status_code determines what HTTP status code should be sent with the error. Syntax show_error($message, $status_code, $heading = '...

@Configuration public class AppSecurityConfig extends WebSecurityConfigurerAdapter { @Autowired DataSource dataSource; @Autowired public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception { auth.jdbcAuthentication().dataSource(dataSource) .pa...

Selenium-Grid is a configuration of Hub & Node which allows you to run your tests on different machines against different browser combinations in parallel. That is, running multiple tests at the same time against different machines running different browsers on different operating systems. In ot...

RunTime Type Services (short: RTTS) are used either for: creating types (RunTime Type Creation; short: RTTC) analysing types (RunTime Type Identification; short: RTTI) Classes CL_ABAP_TYPEDESCR | |--CL_ABAP_DATADESCR | | | |--CL_ABAP_ELEMDESCR | |--CL_ABAP_REFDESCR ...

Before setting up a Selenium grid you need to make sure you have Java installed and configured in your computer’s environment path. Configure the Hub Download latest stable Selenium Server version. Start the command prompt and navigate to the location in which you placed the Selenium server jar...

Verbs used to name CmdLets should be named from verbs from the list supplied be Get-Verb Further details on how to use verbs can be found at Approved Verbs for Windows PowerShell

Integers Signed: i8, i16, i32, i64, isize Unsigned: u8, u16, u32, u64, usize The type of an integer literal, say 45, will be automatically inferred from context. But to force it, we add a suffix: 45u8 (without space) will be typed u8. Note: Size of isize and usize depend on the architecture. On ...

Locking on an stack-allocated / local variable One of the fallacies while using lock is the usage of local objects as locker in a function. Since these local object instances will differ on each call of the function, lock will not perform as expected. List<string> stringList = new List<st...

Detailed instructions on getting data-warehouse set up or installed.

Generate a RSA private key: openssl genrsa -des3 -out server.key 4096 Openssl should ask for a pass phrase at this step. Notice that we’ll use only certificate for communication and authentication, without pass phrase. Just use 123456 for example. Generate the Certificate Signing Request: openssl ...

To run the private registry (securely) you have to generate a self-signed certificate, you can refer to previous example to generate it. For my example I put server.key and server.crt into /root/certs Before run docker command you should be placed (use cd) into the directory that contains certs fo...

When you get a working registry running you can pull or push images on it. For that you need the server.crt file into a special folder on your docker client. The certificate allows you to authenticate with the registry, and then encrypt communication. Copy server.crt from registry machine into /etc...

The continue statement in Objective-C programming language works somewhat like the break statement. Instead of forcing termination, however, continue forces the next iteration of the loop to take place, skipping any code in between. For the for loop, continue statement causes the conditional test a...

import socket import hashlib import os import time import itertools import threading import sys import Crypto.Cipher.AES as AES from Crypto.PublicKey import RSA from CryptoPlus.Cipher import IDEA #server address and port number input from admin host= raw_input("Server Address - &gt...

There are specific scenarios where in we might need to create a Quartz scheduler,based on user input on when a scheduler should be triggered,apart from we can handle cases,where we have certain pre-defined functionalities,which need to be triggered based on user action,at a certain period. This exa...

Especially in a ListView, you can run into performance problems by doing too many findViewById() calls during scrolling. By using the ViewHolder pattern, you can save these lookups and improve your ListView performance. If your list item contains a single TextView, create a ViewHolder class to stor...

Check the right software versions are installed: ansible >=2.0 python >=2.6 shade module for python $ansible --version ansible 2.2.0.0 $python --version Python 2.7.5 Install 'shade' the python component used to pilot openstack. $pip install shade Note : if you use a company...

Our openstack tenant is already set: a virtual lan gives instances private IP a virtual router map public IP to private IP a security key has been generated we have default firewall configuration for ssh and port 80 we are able to launch an instance thanks to the OpenStack web interface ...