Tutorial by Examples: dp

Endpoints require SSL

Introduced in iOS 9, all endpoints must adhere to the HTTPS specification. Any endpoints not using SSL will fail with a warning in the console log. To your application it will appear that the internet connection failed. To configure exceptions: Place the following in your Info.plist file: Allow...

iOS • App Transport Security (ATS)

Modify value in JSON text on the specified path

JSON_MODIFY function uses JSON text as input parameter, and modifies a value on the specified path using third argument: declare @json nvarchar(4000) = N'{"Id":1,"Name":"Toy Car","Price":34.99}' set @json = JSON_MODIFY(@json, '$.Price', 39.99) print @json -...

Microsoft SQL Server • Modify JSON text

Installation of OpenXML SDK and productivity tool on your computer

Go to the Microsoft link for the OpenXML SDK download. Click the red download button. On the next screen click the box next to OpenXMLSDKToolV25.msi and click next to begin the download. Once the download is complete, launch the OpenXMLSDKToolV25.msi and follow the instructions on the screen. Th...

openxml • Getting started with openxml

Complete and Partial Active Patterns

There are two types of Active Patterns that somewhat differ in usage - Complete and Partial. Complete Active Patterns can be used when you are able to enumerate all the outcomes, like "is a number odd or even?" let (|Odd|Even|) number = if number % 2 = 0 then Even else Odd N...

F# • Active Patterns

Develop and Production Product Flavors Example

productFlavors { // Define separate dev and prod product flavors. dev { // dev utilizes minSDKVersion = 21 to allow the Android gradle plugin // to pre-dex each module and produce an APK that can be tested on // Android Lollipop without time c...

android-gradle • Configure Product Flavors

Using the pipe with dplyr and ggplot2

The %>% operator can also be used to pipe the dplyr output into ggplot. This creates a unified exploratory data analysis (EDA) pipeline that is easily customizable. This method is faster than doing the aggregations internally in ggplot and has the added benefit of avoiding unnecessary intermediat...

R Language • Pipe operators (%>% and others)

(Third party) In-App v3 Library

Step 1: First of all follow these two steps to add in app functionality : 1. Add the library using : repositories { mavenCentral() } dependencies { compile 'com.anjlab.android.iab.v3:library:1.0.+' } 2. Add permission in manifest file. <u...

Android • In-app Billing

Using fs And pipe To Stream Static Files From The Server

A good VOD (Video On Demand) service should start with the basics. Lets say you have a directory on your server that is not publicly accessible, yet through some sort of portal or paywall you want to allow users to access your media. var movie = path.resolve('./public/' + req.params.filename); ...

Node.js • Sending a file stream to client

TabbedPage

A TabbedPage is similar to a NavigationPage in that it allows for and manages simple navigation between several child Page objects. The difference is that generally speaking, each platform displays some sort of bar at the top or bottom of the screen that displays most, if not all, of the availabl...

Xamarin.Forms • Xamarin.Forms Page

3rd Party Database References

Create a new SSDT project Import 3rd party DB Build project to create a dacpac Reference dacpac in other projects

ssdt • Database References

Add partial mask on column

You can add partial mask on the column that will show few characters from te beginning and the end of the string and show mask instead of the characters in the middle: ALTER TABLE Company ALTER COLUMN Phone ADD MASKED WITH (FUNCTION = 'partial(5,"XXXXXXX",2)') In the parameters of th...

Microsoft SQL Server • Dynamic data masking

Named Parameters

When invoking a def, parameters may be assigned explicitly by name. Doing so means they needn't be correctly ordered. For example, define printUs() as: // print out the three arguments in order. def printUs(one: String, two: String, three: String) = println(s"$one, $two, $three") ...

Scala Language • Var, Val, and Def

By using SQLCMD on Command Prompt

Command Structure is sqlcmd -S yourservername\instancename -d database_name -o outputfilename_withpath -Q "your select query" Switches are as follows -S for servername and instance name -d for source database -o for target outputfile (it will create output file) -Q fo...

Microsoft SQL Server • Export data in txt file by using SQLCMD

Open camara and photo gallery

index.html <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <meta http-equiv="Content-Security-Policy" content="default-src *; script-src 'self' 'unsafe-inline' 'unsafe-eval' *; style-src 'self' 'unsafe-inline' *"/> ...

ionic-framework • Device camera and photo library access from Ionic application

Describe standard product types (simple, configurable, bundled)

Simple The Simple Products type should be used for that generally have a single configuration (one-size-fits-all). This might include items such as: A Box of Crayons, Small (24 Colors) A Box of Crayons, Large (64 Colors) SuperHighTech 26” HD Computer Monitor Barrack Obama Action Figure (6”) ...

magento • Understanding product types

Using the this Pointer to Differentiate Between Member Data and Parameters

This is an actual useful strategy to differentiate member data from parameters... Lets take this example : // Dog Class Example #include <iostream> #include <string> using std::cout; using std::endl; /* * @class Dog * @member name * Dog's name * @function bark * ...

C++ • The This Pointer

Assert the Value of a Public, Protected and Private property

PHPUnit has two assertions to check values of class properties: assertAttributeSame($expected, $actualAttributeName, $actualClassOrObject, $message = '') assertAttributeNotSame($expected, $actualAttributeName, $actualClassOrObject, $message = '') These methods will check the value of a object p...

phpunit • Assertions

How to vary between child and parent view group touch events

The onTouchEvents() for nested view groups can be managed by the boolean onInterceptTouchEvent. The default value for the OnInterceptTouchEvent is false. The parent's onTouchEvent is received before the child's. If the OnInterceptTouchEvent returns false, it sends the motion event down the cha...

Android • Touch Events

Load music with MPMediaPickerControllerDelegate and play it with AVAudioPlayer

Go through the steps: Add 'NSAppleMusicUsageDescription' to your Info.plist for the privacy authority. Make sure your music is available in your iPhone. It will not work in the simulator. iOS 10.0.1 import UIKit import AVFoundation import MediaPlayer class ViewController: UIViewControll...

iOS • MPMediaPickerDelegate

Diamond Problem - Example

Diamond problem is a common problem occurred in Object Oriented Programming, while using multiple-inheritance. Consider the case where class C, is inherited from class A and class B. Suppose that both class A and class B have a method called foo(). Then when we are calling the method foo(), compil...

oop • Diamond problem