Tutorial by Examples: am

Efficiently building multiple serializers with derived types specified dynamically

Where we came from Sometimes we can't provide all of the required metadata needed for the XmlSerializer framework in attribute. Suppose we have a base class of serialized objects, and some of the derived classes are unknown to the base class. We can't place an attribute for all of the classes which...

.NET Framework • XmlSerializer

Redis installtion on Windows, with Node.js example

Redis has a Windows port provided by 'Microsoft Open Technologies'. You can use the msi installer found on: https://github.com/MSOpenTech/redis/releases After installation completes you can see 'Redis' is a Windows service (and it's status should be "Started") To write an 'Hello world'...

redis • Getting started with redis

Introduction To Dynamic Programming

Dynamic programming solves problems by combining the solutions to subproblems. It can be analogous to divide-and-conquer method, where problem is partitioned into disjoint subproblems, subproblems are recursively solved and then combined to find the solution of the original problem. In contrast, dyn...

dynamic-programming • Getting started with dynamic-programming

Installing LAMP on Ubuntu

Install apache: sudo apt-get install apache2 Install MySql: sudo apt-get install mysql-server Install PHP: sudo apt-get install php5 libapache2-mod-php5 Restart system: sudo systemctl restart apache2 Check PHP installation: php -r 'echo "\n\nYour PHP installation is working fi...

GNU/Linux • LAMP Stack

Notice: Weird same counter nested loops.

This is not something you will see in other programming environments. I came across it some years back and I couldn't understand why it was happening, but after working with MATLAB for some time I was able to figure it out. Look at the code snippet below: for x = 1:10 for x = 1:10 fpr...

MATLAB Language • For loops

See examples under Disposable objects

Basic concept of IDisposable

Visual Basic .NET Language • Using Statement

Introduction To Dynamic Time Warping

Dynamic Time Warping(DTW) is an algorithm for measuring similarity between two temporal sequences which may vary in speed. For instance, similarities in walking could be detected using DTW, even if one person was walking faster than the other, or if there were accelerations and decelerations during ...

dynamic-programming • Dynamic Time Warping

Fence example

The example above can also be implemented with fences and relaxed atomic operations: int x, y; std::atomic<bool> ready{false}; void init() { x = 2; y = 3; atomic_thread_fence(std::memory_order_release); ready.store(true, std::memory_order_relaxed); } void use() { if (re...

C++ • C++11 Memory Model

Understanding State in Dynamic Programming

Let's discuss with an example. From n items, in how many ways you can choose r items? You know it is denoted by . Now think of a single item. If you don't select the item, after that you have to take r items from remaining n-1 items, which is given by . If you select the item, after that you hav...

dynamic-programming • Getting started with dynamic-programming

Draw a Multi Line Geometry

Create a vector source var vectorSource = new ol.source.Vector({}); Initiate Map Object and add vector Layer to the map and Source as the vectorSource var map = new ol.Map({ layers: [ new ol.layer.Tile({ source: new ol.source.OSM() }), new ol.layer.Vector({ ...

openlayers-3 • Draw the different types of geometry

Basic example

You can configure Mail by just adding/changing these lines in the app's .ENV file with your email provider login details, for example for using it with gmail you can use: MAIL_DRIVER=smtp MAIL_HOST=smtp.gmail.com MAIL_PORT=587 [email protected] MAIL_PASSWORD=yourPassword MAIL_E...

Laravel • Mail

web-socket Client example

This is an example of a web-socket client in javascript. It: Connects to a live demo server. Sends a message. Receives message(s). Disconnects after an interval. var mySocket = null; var serverUrl = 'wss://echo.websocket.org'; // wss: is ws: but using SSL. var oWebSocket = window...

WebSockets • Getting started with WebSockets

Basic Example of Html 5 cache

this is our index.html file <!DOCTYPE html> <html manifest="index.appcache"> <body> <p>Content</p> </body> </html> then we will create index.appcache file with below codes CACHE MANIFEST index.html write those files that you want ...

HTML • HTML 5 Cache

Aliasing a long namespace

This is usually used for renaming or shortening long namespace references such referring to components of a library. namespace boost { namespace multiprecision { class Number ... } } namespace Name1 = boost::multiprecision; // Both Type declarations are equivale...

C++ • Namespaces

Declaring sub-namespaces

To declare a single namespace with hierarchy use following example: namespace MyProject\Sub\Level; const CONNECT_OK = 1; class Connection { /* ... */ } function connect() { /* ... */ } The above example creates: constant MyProject\Sub\Level\CONNECT_OK class MyProject\Sub\Level\Connection...

PHP • Namespaces

Sample illustration using ASP.Net Web Forms

GridView definition on ASPX page As shown below, first column of grid is defined as a checkbox column, which is conditionally cleared as shown in further examples below (the header checkbox is only for selecting/un-selecting all rows on current page, but same can be extended for all on grid easily)...

devexpress • Implementing conditional selection of Grid rows in DevExpress GridView

Sample Job

class UserUnsubscribeJob < ApplicationJob queue_as :default def perform(user) # this will happen later user.unsubscribe end end

Ruby on Rails • Active Jobs

simpleCLI and Jython examples

simpleCLI go to simpleCLI, enter the following code java weka.classifiers.rules.ZeroR -t path/to/a-file-of-dataset Jython Example codes from Advanced Weka MOOC course lesson 5.1 # imports import weka.core.converters.ConverterUtils.DataSource as DS import weka.filters.Filter as Filter impor...

weka • Simple Comparison of Weka Interfaces

Creating a matrix of 0s

z1 = zeros(5); % Create a 5-by-5 matrix of zeroes z2 = zeros(2,3); % Create a 2-by-3 matrix

MATLAB Language • Initializing Matrices or arrays

Creating a matrix of 1s

o1 = ones(5); % Create a 5-by-5 matrix of ones o2 = ones(1,3); % Create a 1-by-3 matrix / vector of size 3

MATLAB Language • Initializing Matrices or arrays