Tutorial by Topics

(tested on Flink 1.2 and below) Every function, source or operator in Flink can be stateful. Checkpoints allow Flink to recover state and positions in the streams to give the application the same semantics as a failure-free execution. It is the mecanism behind the guarantees of fault tolerance and...

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.

MVP is an architectural pattern, a derivation of the Model–View–Controller. It's represented by three distinct components: Model, View and the Presenter. It was engineered to facilitate automated unit testing and improve the separation of concerns in presentation logic. In examples you'll find a s...

What should go here, as opposed to webdev.dartlang.org/angular? Eventually this page will have guidelines on what goes where. (Is there a better place for this?) Please comment on https://github.com/dart-lang/site-webdev/issues/471. Background: There are plenty of docs at (aka angulardart.org),...

This section provides an overview of what qt5 is, and why a developer might want to use it. It should also mention any large subjects within qt5, and link out to the related topics. Since the Documentation for qt5 is new, you may need to create initial versions of those related topics.

If you edit a new file: vim these/directories/dont/exist/newfile, you won't be able to save the file as the directory vim is trying to save into does not exist.

Templates are very similar to templates in Angular 1, though there are many small syntactical changes that make it more clear what is happening.

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

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.

Fetching is really important in JPA (Java Persistence API). In JPA, HQL(Hibernate Query Language) and JPQL(Java Persistence Query Language) are used to fetch the entities based on their relationships. Although it is way better than using so many joining queries and sub-queries to get what we want by...

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

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

UIKit Dynamics is a full real-world physics engine integrated into UIKit. It allows you to create interfaces that feel real by adding behaviors such as gravity, attachments, collision and forces. You define the physical traits that you would like your interface elements to adopt, and the dynamics en...

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...

"A field-programmable gate array (FPGA) is an integrated circuit designed to be configured by a customer or a designer after manufacturing – hence "field-programmable". The FPGA configuration is generally specified using a hardware description language (HDL), similar to that used f...

The angular-cli tool can help you to scaffold different parts of an angular application (components, directives, pipes, services, classes, guards, interfaces, enums and modules). ng generate [component | directive | service | pipe | class | enum | interface | guard | module] [name] [flags...] ...

The python tools can be used to generate graph

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....