Tutorial by Examples: r

In Rx Subjects have internal states that can control their behavior. A common use-case form Subject is subscribing it to multiple Observables. The following example creates two different Observables and subscribes a Subject to both of them. Then it tries to print all values that went through: let ...

Let's implement a basic protocol that converts Kelvin and Fahrenheit temperatures to Celsius. defmodule Kelvin do defstruct name: "Kelvin", symbol: "K", degree: 0 end defmodule Fahrenheit do defstruct name: "Fahrenheit", symbol: "°F", degree: 0 en...

1) IP based vhosts <VirtualHost 192.168.13.37> ServerName example.com DocumentRoot /var/www/domains/example.com/html ErrorLog /var/log/example.com/error.log CustomLog /var/log/example.com/access.log common </VirtualHost> <VirtualHost 192.168.47.11> ...

Redis allow you to use the String data type to store floating point numbers. A user can set the float value of a key using the command: SET floatkey 2.0 The set command will create the key if necessary or update it if it already exists. The value of the key can be updated on the server using e...

In the JNDI declaration you may want to encrypt the username and password. You have to implement a custom datasource factory in order to be able to decrypt the credentials. In server.xml replace factory="org.apache.tomcat.jdbc.pool.DataSourceFactory" by factory="cypher.MyCustomDataS...

Interceptors are a good tool for implementing cross-cutting concerns such as logging or authentication. Let's say we have a following service: public interface IService { string CreateOrder(NetworkCredential credentials, Order orderToCreate); string DeleteOrder(NetworkCredential credenti...

For registration like this: var container = new WindsorContainer(); container.Register( Component.For<FirstInterceptor>(), Component.For<SecondInterceptor>(), Component.For<ThirdInterceptor>(), Component.For<IService>() .ImplementedBy<Servi...

Providing your microsoft account credentials you can authenticate and receive subscription keys to start with the services. This document describes the various flows in the tool to create your own knowledge base. QnA Maker works in three steps: extraction, training and publishing. To start, feed ...

A shift register of generic length. With serial in and serial out. library ieee; use ieee.std_logic_1164.all; use ieee.numeric_std.all; entity SHIFT_REG is generic( LENGTH: natural := 8 ); port( SHIFT_EN : in std_logic; SO : out std_logic; ...

The code will work on Windows and Linux. It runs on .NET Core or .NET Standard. The only difference is that, if you wish to run on .NET Core, you should use project.json. If you wish to run on .NET Standard, you should use packages.config. The API Client Library for Cloud Resource Manager API is a...

I won't repeat it all here: "Application Default Credentials provide a simple way to get authorization credentials for use calling Google APIs." If you can use Application Default Credentials, do. There is an extra step you will need to perform the before first using Application Default ...

Once you become familiar with the code to call one method on one Google service, you will be able to infer how to call any method on any Google service. First, we make a connection to the service using the credential object instantiated in the previous example: CloudResourceManagerService service ...

The following 4 properties are available for PXSelector and PXSegmentMask input controls to define size range for a drop-down window: MinDropWidth: gets or sets the minimum drop-down control width MinDropHeight: gets or sets the minimum drop-down control height MaxDropWidth: gets or sets the ma...

Detailed instructions on getting enterprise-architect set up or installed.

Interstitial ads are full-screen ads that cover the interface of their host app. They're typically displayed at natural transition points in the flow of an app, such as between activities or during the pause between levels in a game. Make sure you have necessary permissions in your Manifest file: ...

The @Lazy allow us to instruct the IOC container to delay the initialization of a bean. By default, beans are instantiated as soon as the IOC container is created, The @Lazy allow us to change this instantiation process. lazy-init in spring is the attribute of bean tag. The values of lazy-init are...

Interceptors are registered like regular components in Windsor. Like other components, they can depend on another components. With following service for validating credentials: public interface ICredentialsVerifier { bool IsAuthorizedForService(NetworkCredential credentials); } public cl...

In this topic we will base on this table of users : CREATE TABLE sch_test.user_table ( id serial NOT NULL, username character varying, pass character varying, first_name character varying(30), last_name character varying(30), CONSTRAINT user_table_pkey PRIMARY KEY (id) ) +---...

public class BitmapTools { /// <summary> /// Gets the cropped bitmap asynchronously. /// </summary> /// <param name="originalImage">The original image.</param> /// <param name="startPoint">The start ...

<# .SYNOPSIS Reads a CSV file and filters it. .DESCRIPTION The ReadUsersCsv.ps1 script reads a CSV file and filters it on the 'UserName' column. .PARAMETER Path Specifies the path of the CSV input file. .INPUTS None. You cannot pipe objects to ReadUsersCsv.ps1. ...