Tutorial by Examples: r

If we have a schema looking like: <field name="id" type="string" indexed="true" stored="true" required="true" /> <field name="name" type="string" indexed="true" stored="true" /> the solrj co...

If you added successfully documents to Solr using the previous example, you'll be now able to retrieve them in this way: package com.stackoverflow.solrj.example; import java.io.IOException; import java.util.Iterator; import org.apache.solr.client.solrj.SolrClient; import org.apache.solr.cli...

Data mining is a wide topic, and the term is (unfortunately) very liberally thrown at any topic that involves data processing. Because of this this "documentation" should never have been created in the first place, because it overlaps with other topcis too much, and everything is better di...

In this example we will describe what happens when you scaffold a new project. First thing, the following dependencies will be added to you project (currently project.json file) : "Microsoft.Extensions.Configuration.EnvironmentVariables": "1.0.0", "Microsoft.Extensions.Co...

You can source configuration from environment variables by calling .AddEnvironmentVariables() on you ConfigurationBuilder. It will load environment variables prefixed with APPSETTING_ It will then use colon : as the key path separator. This means that : following environement settings : APPSETTI...

When dealing with large configuration sets of value, it might become quite unhandy to load them one buy one. Option model which comes with asp.net offers a convenient way to map a section to a dotnet poco: For instance, one might hydrate StorageOptions directly from a configuration section b addin...

You can also source configuration from an in memory object such as a Dictionary<string,string> .AddInMemoryCollection(new Dictionary<string, string> { ["akey"] = "a value" }) This can reveal helpful in integration/unit testing scenarios.

public String getHighlightedText(final QueryResponse queryResponse, final String fieldName, final String docId) { String highlightedText = ""; Map<String, Map<String, List<String>>> highlights = queryResponse.getHighlighting(); if (highlights!=null &&am...

To use OpenGL ES in your application you must add this to the manifest: <uses-feature android:glEsVersion="0x00020000" android:required="true"/> Create your extended GLSurfaceView: import static android.opengl.GLES20.*; // To use all OpenGL ES 2.0 methods and constants...

In order to be able to directly deploy web project changes to an Web Server, the following steps must be followed. If target server has Internet access, the process is quite simple, as Microsoft has a Web Platform package to do almost everything that is needed. Cleanup Make sure that C:\Progra...

While good software design often maximizes code reusability, sometimes it can be useful to define asynchronous tasks inline in your code via Lambda expressions to maximize code readability. In this example, we will create a single class which contains a main() method. Inside this method, we will us...

import com.couchbase.client.core.endpoint.SSLEngineFactory import com.couchbase.client.java.env.DefaultCouchbaseEnvironment import com.couchbase.client.java.CouchbaseCluster object CouchbaseConnection extends App { //Create default environment object. //Set the keystone file path(downlo...

This example creates a simple window with a button and a line-edit in a layout. It also shows how to connect a signal to a slot, so that clicking the button adds some text to the line-edit. import sys from PyQt5.QtWidgets import QApplication, QWidget if __name__ == '__main__': app ...

Detailed instructions on getting pyqt4 set up or installed. Windows Link Mac Link Linux Link If you want to install the version specific to your system python version and you system configuration(32-bit or 64-bit) then go to this link and download and install the package. You can install the...

The Assets folder is the most common place to store your GLSL-ES shader files. To use them in your OpenGL ES application you need to load them to a string in the first place. This functions creates a string from the asset file: private String loadStringFromAssetFile(Context myContext, String filePa...

A function returns everything that is not captured by something else. If u use the return keyword, every statement after the return line will not be executed! Like this: Function Test-Function { Param ( [switch]$ExceptionalReturn ) "Start" if($Exceptio...

Character literals provide the most convenient way to express char values in Java source code. A character literal consists of: An opening single-quote (') character. A representation of a character. This representation cannot be a single-quote or a line-break character, but it can be an escap...

At the very core, your entity main DAC must have GUID column (NoteID) to reference CSAnswers table and must have field that identify the class of the Entity. We will make use of Order Type to define list of attributes to gather particular order type-specific information. Create a Graph Extension f...

mvc demo Hello World

var indexController = myApp.controller("indexController", function ($scope) { // Application logic goes here });