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After enabling and creating migrations there might be a need to initially fill or migrate data in your database. There are several possibilities but for simple migrations you can use the method 'Seed()' in the file Configuration created after calling enable-migrations. The Seed() function retrieves...

Find f(n): nth Fibonacci number. The problem is quite easy when n is relatively small. We can use simple recursion, f(n) = f(n-1) + f(n-2), or we can use dynamic programming approach to avoid the calculation of same function over and over again. But what will you do if the problem says, Given 0 <...

Consider the following Java classes: class Foo { private Bar bar; public void foo() { bar.baz(); } } As can be seen, the class Foo needs to call the method baz on an instance of another class Bar for its method foo to work successfully. Bar is said to be a dependency for Foo sin...

The same examples as shown above with XML configuration can be re-written with Java configuration as follows. Constructor injection @Configuration class AppConfig { @Bean public Bar bar() { return new Bar(); } @Bean public Foo foo() { return new Foo(bar()); } } Property in...

Dependencies can be autowired when using the component scan feature of the Spring framework. For autowiring to work, the following XML configuration must be made: <context:annotation-config/> <context:component-scan base-package="[base package]"/> where, base-package is th...

Constructor injection through Java configuration can also utilize autowiring, such as: @Configuration class AppConfig { @Bean public Bar bar() { return new Bar(); } @Bean public Foo foo(Bar bar) { return new Foo(bar); } }

Objective-C Import the following to your ViewController #import <CoreImage/CoreImage.h> #import <CoreImage/CoreImage.h> #import <QuartzCore/QuartzCore.h> Call the function [self faceDetector]; Function definition: -(void)faceDetector { // Load the picture for face...

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...

public static Boolean ExportDB(String DATABASE_NAME , String packageName , String folderName){ //DATABASE_NAME including ".db" at the end like "mayApp.db" String DBName = DATABASE_NAME.substring(0, DATABASE_NAME.length() - 3); File data = Environment.getDataDir...

Data Visualization is an art of presenting the data in a manner that even a non-analyst can understand it. A perfect blend of aesthetic elements like colors, dimensions, labels can create visual masterpieces, hence revealing surprising business insights which in turn helps businesses to make informe...

There are several packages which can run Processing sketches in the Atom editor. These instructions use the Script package. There are also available packages for syntax highlighting and autocomplete, which are required for Script to identify Processing filetypes. Install the Script plugin. Either b...

For example: You are going to migrate an existing column from non-required to required. In this case you might need to fill some default values in your migration for rows where the altered fields are actually NULL. In case the default value is simple (e.g. "0") you might use a default or d...

Pigeonhole Sort is a sorting algorithm that is suitable for sorting lists of elements where the number of elements (n) and the number of possible key values (N) are approximately the same. It requires O(n + Range) time where n is number of elements in input array and ‘Range’ is number of possible va...

Radix Sort is lower bound comparison based algorithm. It is a non-comparative integer sorting algorithm that sorts data with integer keys by grouping keys by individual digits which share some significant position and value. Radix sort is a linear time sorting algorithm that sort in O(n+k) time whe...

DBCC commands enable user to validate state of database. ALTER TABLE Table1 WITH NOCHECK ADD CONSTRAINT chkTab1 CHECK (Col1 > 100); GO DBCC CHECKCONSTRAINTS(Table1); --OR DBCC CHECKCONSTRAINTS ('Table1.chkTable1'); Check constraint is added with nocheck options, so it will not be ...

DBCC commands can show information about database objects. DBCC PROCCACHE Displays information in a table format about the procedure cache. DBCC OUTPUTBUFFER ( session_id [ , request_id ]) Returns the current output buffer in hexadecimal and ASCII format for the specified session_id (and o...

DBCC statements act as Database Console Commands for SQL Server. To get the syntax information for the specified DBCC command use DBCC HELP (...) statement. The following example returns all DBCC statements for which Help is available: DBCC HELP ('?'); The following example returns options f...

ghci> :set -XOverloadedStrings ghci> import Data.Text as T isInfixOf :: Text -> Text -> Bool checks whether a Text is contained anywhere within another Text. ghci> "rum" `T.isInfixOf` "crumble" True isPrefixOf :: Text -> Text -> Bool checks whether a...

Git config allows you to customize how git works. It is commonly used to set your name and email or favorite editor or how merges should be done. To see the current configuration. $ git config --list ... core.editor=vim credential.helper=osxkeychain ... To edit the config: $ git config &lt...

Download the files from our.umbraco.org/download and unzip them in a folder. Set up web server hosting the folder you chose. Although IIS is a requirement for production sites, it runs fine for development in IIS Express. Set up file permissions for the folder. For development server it is okey ...