Tutorial by Topics

This section provides an overview of what ruby-on-rails-5 is, and why a developer might want to use it. It should also mention any large subjects within ruby-on-rails-5, and link out to the related topics. Since the Documentation for ruby-on-rails-5 is new, you may need to create initial versio...

How to generate a random number in Ruby. Alias of Random::DEFAULT.rand. This uses a pseudo-random number generator which approximates true randomness

Accessing network share file using PInvoke.

Logging in Haskell is achieved usually through functions in the IO monad, and so is limited to non-pure functions or "IO actions". There are several ways to log information in a Haskell program: from putStrLn (or print), to libraries such as hslogger or through Debug.Trace.

Xcode includes a performance tuning application named Instruments that you can use to profile your application using all sorts of different metrics. They have tools to inspect CPU usage, memory usage, leaks, file/network activity, and energy usage, just to name a few. It’s really easy to start profi...

Apache Flume is a tool/service/data ingestion mechanism for collecting aggregating and transporting large amounts of streaming data such as log files, events (etc...) from various sources to a centralized data store. Flume is a highly reliable, distributed, and configurable tool. It is principally ...

The Cloudfoundry command line interface is a wonderful thing that saves time and spares you needing to use UIs as much. Here is my cheatsheet. First you need to install it from https://docs.cloudfoundry.org/cf-cli/install-go-cli.html I have ordered the examples in order of Most Useful To Me. Your...

The API to use a relational database from Java is JDBC. This API is implemented by a JDBC driver. To use it, put the JAR-file with the driver on the JAVA class path. This documentation shows samples how to use the JDBC driver to connect to a database. JDBC URL The JDBC URL can take one of ...

In .Net, objects created with new() are allocated on the managed heap. These objects are never explicitly finalized by the program that uses them; instead, this process is controlled by the .Net Garbage Collector. Some of the examples below are "lab cases" to show the Garbage Collector at...

CDI's flagship feature is a declarative API for dependency injection. Classes can have dependencies flagged with the @Inject annotation, which will indicate to the CDI manager that it needs to provide those dependencies when constructing an instance of the class.

By using asynchronous sockets a server can listening for incoming connections and do some other logic in the mean time in contrast to synchronous socket when they are listening they block the main thread and the application is becoming unresponsive an will freeze until a client connects. Socke...

Why do I need these no-args constructors??? What happens if a session scoped bean gets injected into an application scoped bean? How does the application scoped bean get the correct session scoped bean instance for each request? Wouldn't the session scoped bean leak out into other requests? How ...

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

Getting Started Bridge Mode It's a default and attached to docker0 bridge. Put container on a completely separate network namespace. Host Mode When container is just a process running in a host, we'll attach the container to the host NIC. Mapped Container Mode This mode essentially maps a new ...

This topic explains how to create dynamic dialogs to interact with the user.

This describes what C code will break in a C++ compiler.

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