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Checking the Existence of Keys Sometimes you may need to check if a key already exists and proceed accordingly. To do so you can use exists() function as shown below: client.exists('key', function(err, reply) { if (reply === 1) { console.log('exists'); } else { cons...

ICU(International Components for Unicode) can be installed as a library for the following languages: Java: ICU4J C/C++: ICU4C Python: pyICU Perl: Wrappers for ICU (PICU) C#: ICU-dotnet Erlang: icu4e Ruby: ffi-icu Haskell: text-icu Lua: ICU4Lua Here is a series of installion steps for a...

Here i am going to explain the ajax custom pagination in cakephp 3.2. This one is easier to use and understandable. Do this code inside any function and any controller you need. Make an ajax call for the pagination <script type="text/javascript"> $(document).ready(function ()...

Azure SQL Database has different editions and performance tiers. You can find version, edition (basic, standard, or premium), and service objective (S0,S1,P4,P11, etc.) of SQL Database that is running as a service in Azure using the following statements: select @@version SELECT DATABASEPROPERTYEX...

You can scale-up or scale-down Azure SQL database using ALTER DATABASE statement: ALTER DATABASE WWI MODIFY (SERVICE_OBJECTIVE = 'P6') -- or ALTER DATABASE CURRENT MODIFY (SERVICE_OBJECTIVE = 'P2') If you try to change service level while changing service level of the current database is sti...

You can create a secondary replica of database with the same name on another Azure SQL Server, making the local database primary, and begins asynchronously replicating data from the primary to the new secondary. ALTER DATABASE <<mydb>> ADD SECONDARY ON SERVER <<secondaryserver&gt...

You can put your azure SQL Database in SQL elastic pool: CREATE DATABASE wwi ( SERVICE_OBJECTIVE = ELASTIC_POOL ( name = mypool1 ) ) You can create copy of an existing database and place it in some elastic pool: CREATE DATABASE wwi AS COPY OF myserver.WideWorldImporters ( SERVICE_OBJECTIV...

An instantiation error is thrown if an argument is not sufficiently instantiated. Critically, an instantiation error cannot be replaced by silent failure: Failing in such cases would mean that there is no solution, whereas an instantiation error means that an instance of the argument may participat...

Detailed instructions on getting raphael set up or installed.

CLR procedures are not enabled by default. You need to run the following queries to enable CLR: sp_configure 'show advanced options', 1; GO RECONFIGURE; GO sp_configure 'clr enabled', 1; GO RECONFIGURE; GO In addition, if some CLR module need external access, you should set TRUSTWORTHY pr...

Procedures, functions, triggers, and types written in .Net languages are stored in .dll files. Once you create .dll file containing CLR procedures you should import it into SQL Server: CREATE ASSEMBLY MyLibrary FROM 'C:\lib\MyStoredProcedures.dll' WITH PERMISSION_SET = EXTERNAL_ACCESS PERM...

If you have created .Net function, compiled it into .dll, and imported it into SQL server as an assembly, you can create user-defined function that references function in that assembly: CREATE FUNCTION dbo.TextCompress(@input nvarchar(max)) RETURNS varbinary(max) AS EXTERNAL NAME MyLibrary.[Nam...

If you have create .Net class that represents some user-defined type, compiled it into .dll, and imported it into SQL server as an assembly, you can create user-defined function that references this class: CREATE TYPE dbo.Point EXTERNAL NAME MyLibrary.[Name.Space.Point] You need to specify name...

If you have created .Net method in some class, compiled it into .dll, and imported it into SQL server as an assembly, you can create user-defined stored procedure that references method in that assembly: CREATE PROCEDURE dbo.DoSomethng(@input nvarchar(max)) AS EXTERNAL NAME MyLibrary.[Name.Space....

It's not the best way of iterating through the pixels; however, it's better than cv::Mat::at<T>. Let's assume you have a color image in your folder and you want to iterate each pixels of this image and erase green and red channels(Note that this is an example, you can do this in more optimize...

Frontend Interface /** * Entity attribute frontend interface * * Frontend is providing the user interface for the attribute * */ interface Mage_Eav_Model_Entity_Attribute_Frontend_Interface { } Source Interface /** * Entity attribute select source interface * * Source is providing ...

For Visual Studio [NuGet]: The easiest way of installing PhantomJS is by using a NuGet Package Manager. In your project, right click "References", and click on "Manage NuGet Packages" as shown: Then, type "PhantomJS" to the search bar, select it and install it as s...

This example shows how to validate forms in Spring MVC using Bean Validation API using Java Annotations, without any xml. User will be proposed to input their registration data and validator will check it for validity. Add Dependencies First of all add the following dependencies in your project: ...

Observers are used for listening to livecycle callbacks of a certain model in Laravel. These listeners may listen to any of the following actions: creating created updating updated saving saved deleting deleted restoring restored Here is an example of an observer. UserObserver &l...

Set this attribute in your manifest's or element to enable or disable multi-window display: android:resizeableActivity=["true" | "false"] If this attribute is set to true, the activity can be launched in split-screen and freeform modes. If the attribute is set to false, the...