Tutorial by Examples: d

In C, there are two unary operators - '++' and '--' that are very common source of confusion. The operator ++ is called the increment operator and the operator -- is called the decrement operator. Both of them can be used used in either prefix form or postfix form. The syntax for prefix form for ++ ...

USE TDE CREATE DATABASE ENCRYPTION KEY WITH ALGORITHM = AES_256 ENCRYPTION BY SERVER CERTIFICATE My_New_Cert GO ALTER DATABASE TDE SET ENCRYPTION ON GO This uses 'Transparent Data Encryption' (TDE)

Odoo (formerly known as OpenERP and before that, TinyERP) is a suite of open core enterprise management applications. Targeting companies of all sizes, the application suite covers all business needs, from Website/Ecommerce down to manufacturing, inventory and accounting, all seamlessly integrated. ...

A common pattern in other languages is having a function that produces a "stream" of objects, and being able to use loop-code to loop over it. We can model this in C++ as template<class T> struct generator_iterator { using difference_type=std::ptrdiff_t; using value_type=T; ...

SASS gives you the ability to omit any parameter except the ones you want to overwrite of course. Let's take again the default-box example: @mixin default-box ($color: red, $borderColor: blue) { color: $color; border: 1px solid $borderColor; clear: both; display: block; mar...

Laravel automatically resolves Eloquent models defined in routes or controller actions whose variable names match a route segment name. For example: Route::get('api/users/{user}', function (App\User $user) { return $user->email; }); In this example, since the Eloquent $user variable de...

To register an explicit binding, use the router's model method to specify the class for a given parameter. You should define your explicit model bindings in the boot method of the RouteServiceProvider class public function boot() { parent::boot(); Route::model('user', App\User::class); ...

By definition: Services are basically constructor functions. They use ‘this’ keyword. Factories are simple functions hence return an object. Under the hood: Factories internally calls provider function. Services internally calls Factory function. Debate: Factories can run code before we retur...

Given these sample data: IDSTATUSSTATUS_TIMESTATUS_BY1ONE2016-09-28-19.47.52.501398USER_13ONE2016-09-28-19.47.52.501511USER_21THREE2016-09-28-19.47.52.501517USER_33TWO2016-09-28-19.47.52.501521USER_23THREE2016-09-28-19.47.52.501524USER_4 Items identified by ID values must move from STATUS 'ONE' to...

Deferred execution enables combining different operations to build the final query, before evaluating the values: var list = new List<int>() {1,1,2,3,5,8}; var query = list.Select(x => x + 1); If we execute the query at this point: foreach (var x in query) { Console.Write($"...

With deferred execution, if the data to be queried is changed, the query object uses the data at the time of execution, not at the time of definition. var data = new List<int>() {2, 4, 6, 8}; var query = data.Select(x => x * x); If we execute the query at this point with an immediate m...

0.6.0-dev In Julia v0.6 and later, command macros are supported in addition to regular string macros. A command macro invocation like mymacro`xyz` gets parsed as the macro call @mymacro_cmd "xyz" Note that this is similar to string macros, except with _cmd instead of _str. We typ...

An enumerated type is a type that can hold one of a finite list of possible values. In Julia, enumerated types are typically called "enum types". For instance, one could use enum types to describe the seven days of the week, the twelve months of the year, the four suits of a standard 52-ca...

public class RedisPublisher extends RouteBuilder { public static final String CAMEL_REDIS_CHANNEL = "CamelRedis.Channel"; public static final String CAMEL_REDIS_MESSAGE = "CamelRedis.Message"; @Value("${redis.host}") private String redisHost; ...

public class RedisSubscriber extends RouteBuilder { @Value("${redis.host}") private String redisHost; @Value("${redis.port}") private int redisPort; @Value("${redis.channel.mychannel}") private String redisChannel; private Object b...

public class ManagedCamel implements Managed { public static final String REDIS_TEMPLATE = "redisTemplate"; public static final String LISTENER_CONTAINER = "listenerContainer"; public static final String REDIS_SERIALIZER = "redisSerializer"; privat...

By Creating Custom Progress Dialog class, the dialog can be used to show in UI instance, without recreating the dialog. First Create a Custom Progress Dialog Class. CustomProgress.java public class CustomProgress { public static CustomProgress customProgress = null; private Dialog m...

All instances (objects) of an entity class can be loaded from the underlying database table as follows (akin to retrieving all rows from the table): Iterable<Foo> foos = fooRepository.findAll(); The findAll method is provided by the CrudRepository interface. It returns an Iterable instead ...

A particular instance of an entity class can be loaded as follows: Foo foo = fooRepository.findOne(id); The findOne method is provided by the CrudRepository interface. It expects an identifier that uniquely identifies an entity instance (for instance, a primary key in a database table). The Java...

All instances of an entity class with one of the class attributes matching a specified value can be retrieved as follows: public interface FooRepository extends CrudRepository<Foo, Long> { List<Foo> findAllByName(String name); } Invoking the findAllByName method results in the JP...