Tutorial by Examples: dis

Most examples show instantiating and holding a LazySingleton object until the owning application has terminated, even if that object is no longer needed by the application. A solution to this is to implement IDisposable and set the object instance to null as follows: public class LazySingleton : ID...

Users often turn up in a situation when a business process cannot be finished because the user has not entered all the necessary information. An example of this situation is when a user tries to create a drop-ship order with missing customer address. According to UX best practices, the system shou...

In the case of a discriminated record type, some of the components are known as discriminants and the remaining components can depend upon these. The discriminants can be thought of as parameterizing the type and the syntax reveals this analogy. In this example we create a type that provide a sq...

NLTK provides the FreqDist class that let's us easily calculate a frequency distribution given a list as input. Here we are using a list of part of speech tags (POS tags) to see which lexical categories are used the most in the brown corpus. import nltk brown_tagged = nltk.corpus.brown.tagged_w...

It is very easy to disable turbolinks on specific links. According to the official turbolinks documentation: Turbolinks can be disabled on a per-link basis by annotating a link or any of its ancestors with data-turbolinks="false". Examples: // disables turbolinks for this one link ...

On the machine where you'd like to make the backup, jump to the Redis CLI: redis-cli Password? If your master Redis DB (the one you want to replicate) has a password: config set masterauth <password> Start replication Run the following to begin replication: SLAVEOF <host> <...

GTKWave is a fully feature graphical viewing package that supports several graphical data storage standards, but it also happens to support VCD, which is the format that vvp will output. So, to pick up GTKWave, you have a couple options Goto http://gtkwave.sourceforge.net/gtkwave.zip and downloa...

first add the OkHttp to the gradle build file of the app module compile 'com.squareup.picasso:picasso:2.5.2' compile 'com.squareup.okhttp:okhttp:2.4.0' compile 'com.jakewharton.picasso:picasso2-okhttp3-downloader:1.0.2' Then make a class extending Application import android.app.Application; ...

Redis provides the SCAN command to iterate over the keys in the database matching a particular pattern. Redis supports glob style pattern matching in the SCAN command. The SCAN command provides a cursor-based iterator over the Redis keyspace. The iterative call sequence to SCAN starts with the us...

The redis-py client provides two classes StrictRedis and Redis to establish a basic connection to a Redis database. The Redis class is provided for backwards compatibility and new projects should use the StrictRedis class. One of the recommended ways to establish a connection, is to define the con...

For this example, we will used 4 bodies and will show only the last 8 bits of the bit masks for simplicity. The 4 bodies are 3 SKSpriteNodes, each with a physics body and a boundary: let edge = frame.insetBy(dx: 0, dy: 0) physicsBody = SKPhysicsBody(edgeLoopFrom: edge) Note that the 'ed...

In this example I will be using oauth2 in rest api with redis database Important: You will need to install redis database on your machine, Download it from here for linux users and from here to install windows version, and we will be using redis manager desktop app, install it from here. ...

Create Selector for Enable/Disable Menu Item. selector.xml <?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:color="@color/white" android:state_enabled="true&q...

This will add a simple widget which displays just a small message. add_action('wp_dashboard_setup', 'register_my_dashboard_widgets'); function register_my_dashboard_widgets() { wp_add_dashboard_widget('myInfo_widget', 'Important Information', 'display_infoWidget'); } ...

Imagine many users all running a web application that is trying to increment a counter in the database. Each user must read the current count, add one and write out the updated value. To make sure no one reads the counter while someone else is is adding one we use a transaction: ref.transaction(fun...

Implement Dispose() method (and declare the containing class as IDisposable) as a means to ensure any memory-heavy resources are freed as soon as the object is no longer used. The "catch" is that there is no strong guarantee the the Dispose() method would ever be invoked (unlike finalizers...

As Dispose() and finalizers are aimed to different purposes, a class managing external memory-heavy resources should implement both of them. The consequence is writing the class so that it handles well two possible scenarios: When only the finalizer is invoked When Dispose() is invoked first and...

WP_DEBUG_DISPLAY is another companion to WP_DEBUG that controls whether debug messages are shown inside the HTML of pages or not. The default is 'true' which shows errors and warnings as they are generated. Setting this to false will hide all errors. This should be used in conjunction with WP_DEBUG_...

To start with creating your own service, take a look at the base class of each service, which is called ItsG5Service. Also you can look at the CamService and the DenmService as they are already implemented services. All application related files and classes can be found in the artery/application sub...

You can simply access the fashdata in view like this <?php echo $this->session->flashdata('message'); ?> For access multiple message just change identifier For Ex. <?php echo $this->session->flashdata('my_alert'); ?> <?php echo $this->session->flashdata('my_wa...