Tutorial by Examples: ci

Instancing by Vertex Attribute Arrays

3.3 Instancing can be done via modifications to how vertex attributes are provided to the vertex shader. This introduces a new way of accessing attribute arrays, allowing them to provide per-instance data that looks like a regular attribute. A single instance represents one object or group of vert...

opengl • Instancing

SRP - Single Responsibility Principle

The S in S.O.L.I.D stands for Single responsibility principle(SRP). Responsibility means in this context reasons to change, so the principle states that a class should only have one reason to change. Robert C. Martin stated it (during his lecture at Yale shool of management in 10 Sep 2014) as foll...

Design patterns • SOLID

Static import

JUnit defines quite some assertEquals methods at least one for each primitive type and one for Objects is available. These methods are by default not directly available to call and should be called like this: Assert.assertEquals. But because these methods are used so often people almost always use a...

Android • Unit testing in Android with JUnit

Secure connection to couchbase using java sdk with specific cipher suites and protocols

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...

couchbase • Connect to couchbase over SSL using SDK

Encoding and Decoding ASCII85

Adobe created it's own encoding called ASCII85 which is similar to Base85, but has its differences. This encoding is used frequently in Adobe PDF files. These functions were released in Python version 3.4. Otherwise, the functions base64.a85encode() and base64.a85encode() are similar to the previous...

Python Language • The base64 Module

Loading Dojo specific CSS

The esri.css file does not include the CSS for various Dojo widgets or themes like tundra or claro; those files must be included separately. Exceptions are the Grid and RangeSlider, which are used by widgets in the API. Grid styles must be explicitly included. For instance, this CSS file would be i...

arcgis • ArcGIS JS API

Basic implementation

Person Microdata <section itemscope itemtype="http://schema.org/Person"> Hello, my name is <span itemprop="name">John Doe</span>, I am a <span itemprop="jobTitle">Graduate research assistant</span> at the <span itempr...

schema.org • Getting started with schema.org

Get your new instance public IP

Instead of printing all the informations, we print only IP address of the first instance whose name is "MyOwnPersonalInstance". It's usually all we need. $vi get_compute_ip.yml - name: Get and print instance IP hosts: localhost gather_facts: False tasks: - name: Get VM infos...

ansible • Using Ansible with OpenStack

Referencing Capture Groups

Backreferences "Backreferences" are references in a search regex to capture groups in the same search regex. The "search regex" is the regex used in the "Find" field of the Find/Replace dialog box. Here is the most common backreference syntax: Absolute: (group one)...

notepad++ • Regex

Implicit Implementation And Object Shape

TypeScript supports interfaces, but the compiler outputs JavaScript, which doesn't. Therefore, interfaces are effectively lost in the compile step. This is why type checking on interfaces relies on the shape of the object - meaning whether the object supports the fields and functions on the interfac...

TypeScript • Interfaces

The below Code Snippet is to setup the StrictMode for Thread Policies. This Code is to be set at the entry points to our application.

StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder() .detectDiskWrites() .penaltyLog() //Logs a message to LogCat .build())

Android • Strict Mode Policy : A tool to catch the bug in the Compile Time.

Referencing files within code

Let's say that inside a resources file, you had a file called /icons/ok.png The full url of this file within code is qrc:/icons/ok.png. In most cases, this can be shortened to :/icons/ok.png For example, if you wanted to create a QIcon and set it as the icon of a button from that file, you could u...

Qt • Qt Resource System

Specifying the Direction of the Query From the Top Down

SELECT E.LAST_NAME|| ' reports to ' || PRIOR E.LAST_NAME "Walk Top Down" FROM HR.EMPLOYEES E START WITH E.MANAGER_ID IS NULL CONNECT BY PRIOR E.EMPLOYEE_ID = E.MANAGER_ID;

Oracle Database • Hierarchical Retrieval With Oracle Database 12C

Hello World with Nested Dependencies

The following example expands upon Hello World by demonstrating multiple dependencies using the define() function. Create a new HTML file called index.html and paste the following content: <!DOCTYPE html> <html lang="en"> <head> <title>Hello RequireJS</t...

requirejs • Getting started with requirejs

Basic introduction to programming language's rules

From the gnuplot 5.0 official online documentation: The command language of gnuplot is case sensitive, i.e. commands and function names written in lowercase are not the same as those written in capitals. All command names may be abbreviated as long as the abbreviation is not ambiguous. Any number...

Gnuplot • Getting started with Gnuplot

Diagnostic information

Debugging questions. When question is related to debugging specific exception always provide relevant traceback. While it is advisable to remove duplicated outputs (from different executors or attempts) don't cut tracebacks to a single line or exception class only. Performance questions. Dependin...

apache-spark • How to ask Apache Spark related question?

Creating an UberJAR for an application and its dependencies

A common requirement for a Java application is that can be deployed by copying a single file. For simple applications that depend only on the standard Java SE class libraries, this requirement is satisfied by creating a JAR file containing all of the (compiled) application classes. Things are not ...

Java Language • Java deployment

Using common interfaces to abstract away vendor specific classes

var providerName = "System.Data.SqlClient"; //Oracle.ManagedDataAccess.Client, IBM.Data.DB2 var connectionString = "{your-connection-string}"; //you will probably get the above two values in the ConnectionStringSettings object from .config file var factory = DbProviderFac...

.NET Framework • ADO.NET

Do multiple line regexp replacing with unconditional branch

Assume that I have a file named in.txt: $ cat in.txt a b a c a d I only want to replace the a\nc with deleted, but not a\nb or a\nd. $ sed -e ':loop # create a branch/label named `loop` $!{ N # append the next line of input into the pattern space /\n$/!b...

sed • Branching Operation

Basic IntentService Example

The abstract class IntentService is a base class for services, which run in the background without any user interface. Therefore, in order to update the UI, we have to make use of a receiver, which may be either a BroadcastReceiver or a ResultReceiver: A BroadcastReceiver should be used if your s...

Android • IntentService