Tutorial by Topics: de

Oracle official style guide for the Java Programming Language is a standard followed by developers at Oracle and recommended to be followed by any other Java developer. It covers filenames, file organization, indentation, comments, declarations, statements, white space, naming conventions, programmi...

A Singleton is designed to ensure a class only has one instance and provides a global point of access to it. If you only require one instance or a convenient global point of access, but not both, consider other options before turning to the singleton. Global variables can make it harder to reason...

val (|>) : 'a -> ('a -> 'b) -> 'b val (@@) : ('a -> 'b) -> 'a -> 'b

cascade="all-delete-orphan" Entities has associations to other objects, this may be an association to a single item (many-to-one) or an association to a collection (one-to-many, many-to-any). At any rate, you are able to tell NHibernate to automatically traverse an entity's assoc...

Acceptable URI examples: "http://www.example.com/image.png" // from Web "file:///mnt/sdcard/image.png" // from SD card "file:///mnt/sdcard/video.mp4" // from SD card (video thumbnail) "content://media/external/images/media/13" // from content provider ...

public delegate TResult Func<in T, out TResult>(T arg) public delegate TResult Func<in T1, in T2, out TResult>(T1 arg1, T2 arg2) public delegate TResult Func<in T1, in T2, in T3, out TResult>(T1 arg1, T2 arg2, T3 arg3) public delegate TResult Func<in T1, in T2, in T3, in T4...

A defer statement pushes a function call onto a list. The list of saved calls is executed after the surrounding function returns. Defer is commonly used to simplify functions that perform various clean-up actions. defer someFunc(args) defer func(){ //code goes here }() Defer works by...

The urls used in the above examples reference a specific version of Node Version Manager. It is most likely that the latest version is different to what's being referenced. To install nvm using the latest version, click here to access nvm on GitHub, which will provide you with latest urls.

Debug.log "tag" anyValue Debug.log takes two parameters, a String to tag the debug output in the console (so you know where it's coming from / what the message corresponds to), and a value of any type. Debug.log executes the side-effect of logging the tag and the value to the Jav...

Json.Decode exposes two functions to decode a payload, first one is decodeValue which tries to decode a Json.Encode.Value, the second one is decodeString which tries to decode a JSON string. Both function take 2 parameters, a decoder and a Json.Encode.Value or Json string.

Attribute types include: Undefined, Integer 16, Integer 32, Integer 64, Decimal, Double, Float, String, Boolean, Date, Binary, Data, or Transformable When defining an Entity as abstract you won't be creating any instances of that entity. For example a Person would be abstract and a Emp...

In R, tabular data is stored in data frames. This topic covers the various ways of transforming a single table. Helpful packages Reshaping, stacking and splitting with data.table Reshape using tidyr splitstackshape