Tutorial by Topics: le

Type Handlers allow database types to be converted to .Net custom types.

public static SqlMapper.GridReader QueryMultiple(this IDbConnection cnn, string sql, object param = null, IDbTransaction transaction = null, int? commandTimeout = null, CommandType? commandType = null) public static SqlMapper.GridReader QueryMultiple(this IDbConnection cnn, CommandDefinition comm...

The only requirement for an object to be initialized using this syntactic sugar is that the type implements System.Collections.IEnumerable and the Add method. Although we call it a collection initializer, the object does not have to be an collection.

Reflection is a C# language mechanism for accessing dynamic object properties on runtime. Typically, reflection is used to fetch the information about dynamic object type and object attribute values. In REST application, for example, reflection could be used to iterate through serialized response ob...

There are several kinds of collection: Array List Queue SortedList Stack Dictionary

var result = possibleNullObject ?? defaultValue; ParameterDetailspossibleNullObjectThe value to test for null value. If non null, this value is returned. Must be a nullable type.defaultValueThe value returned if possibleNullObject is null. Must be the same type as possibleNullObject. The n...

Purpose And Use Cases The purpose of the Task Parallel Library is to simplify the process of writing and maintaining multithreaded and parallel code. Some Use Cases*: Keeping a UI responsive by running background work on separate task Distributing workload Allowing a client application ...

The collections framework in java.util provides a number of generic classes for sets of data with functionality that can't be provided by regular arrays. Collections framework contains interfaces for Collection<O>, with main sub-interfaces List<O> and Set<O>, and mapping collectio...

Java I/O (Input and Output) is used to process the input and produce the output. Java uses the concept of stream to make I/O operation fast. The java.io package contains all the classes required for input and output operations. Handling files is also done in java by Java I/O API.

Gradle is a JVM-based build system that enables developers to write high-level scripts that can be used to automate the process of compilation and application production. It is a flexible plugin-based system, which allows you to automate various aspects of the build process; including compiling and ...

A singleton is a class that only ever has one single instance. For more information on the Singleton design pattern, please refer to the Singleton topic in the Design Patterns tag.

FileOutputStream openFileInput (String name) FileOutputStream openFileOutput (String name, int mode) File(File dir, String name) File(String path) File getExternalStoragePublicDirectory (String type) File getExternalFilesDir (String type) ParameterDetailsnameThe name of the file to ope...

As of Java 8, Calendar and its subclasses have been superseded by the java.time package and its subpackages. They should be preferred, unless a legacy API requires Calendar.

RecyclerView is a more advanced version of List View with improved performance and additional features. ParameterDetailAdapterA subclass of RecyclerView.Adapter responsible for providing views that represent items in a data setPositionThe position of a data item within an AdapterIndexThe index ...

ParameterDetailsGoogleMapthe GoogleMap is an object that is received on a onMapReady() eventMarkerOptionsMarkerOptions is the builder class of a Marker, and is used to add one marker to a map. Requirements Google Play Services SDK installed. A Google Console Account. A Google Maps API Key o...

The java.util.Iterator is the standard Java SE interface for object that implement the Iterator design pattern. The java.lang.Iterable interface is for objects that can provide an iterator. It is possible to iterate over an array using the for-each loop, though java arrays do not implement Iterab...