Tutorial by Topics: and

In this topic you will learn how to extend the Related Entity Description field with a custom entity for Tasks, Events and Activities.

In many applications, records from MongoDB need to be serialized in JSON format. If your records have fields of type date, datetime, objectId, binary, code, etc. you will encounter TypeError: not JSON serializable exceptions when using json.dumps. This topic shows how to overcome this.

It's worth noting that on declaring a reference type, its initial value will be null. This is because it does not yet point to a location in memory, and is a perfectly valid state. However, with the exception of nullable types, value types must typically always have a value.

Dplyr and many modern libraries in R use non-standard evaluation (NSE) for interactive programming and standard evaluation (SE) for programming1. For instance, the summarise() function use non-standard evaluation but relies on the summarise_() which uses standard evaluation. The lazyeval library m...

Virtually all apps are using asynchronous functions to keep the code from blocking the main thread.

This topic discusses how to map one-to-one type relationships using Entity Framework.

The topic discusses how you can map one-to-many and many-to-many relationships using Entity Framework Code First.

Integrate Firebase with Google AppScript to Read and Write Data in the Firebase Database. Firebase is a NoSQL database system by Google that uses realtime database to help create and host applications on mobile, desktop and tablet devices. NoSQL databases use the JSON objects to store the data in s...

Savepoints are "fat", externally stored checkpoints that allow us to resume a stateful flink program after a permanent failure, a cancelation or a code update. Before Flink 1.2 and the introduction of externalized checkpoints, savepoints needed to be triggered explicitly.

Kotlin has a built-in view injection for Android, allowing to skip manual binding or need for frameworks such as ButterKnife. Some of the advantages are a nicer syntax, better static typing and thus being less error-prone.

Oracle produces a variety of exceptions. You may be surprised how tedious it can be to have your code stop with some unclear message. To improve your PL/SQL code's ability to get fixed easily it is necessary to handle exceptions at the lowest level. Never hide an exception "under the carpet&quo...

This section provides an overview of what random is, and why a developer might want to use it. It should also mention any large subjects within random, and link out to the related topics. Since the Documentation for random is new, you may need to create initial versions of those related topics....

The Dll and DllReference plugins allow the code to be split in multiple bundles in a way the bundles can be compiled independently. It is possible to build "vendor" scripts in a library that does not need to be compiled often (ex: React, jQuery, Bootstrap, Fontawesome...) and reference it...

For some time I've searched for the best way to log requests and response in an ASP.Net Core. I was developing services and one of the requirements was to record request with its response in one record the the database. So many topics out there but none worked for me. it's either for request only, r...

VHDL types can be unresolved or resolved. The bit type declared by the std.standard package, for instance, is unresolved while the std_logic type declared by the ieee.std_logic_1164 package is resolved. A signal which type is unresolved cannot be driven (assigned) by more than one VHDL process whil...

SCENARIO: ASP.NET Core background Angular 2 Front-End Angular 2 Components using Asp.net Core Controllers It way can implement Angular 2 over Asp.Net Core app. It let us call MVC Controllers from Angular 2 components too with the MVC result View supporting Angular 2.