This tag should be used for questions regarding the development of R packages. Do not use this tag to ask questions about the use of R packages. Many common R packages have their own tags for that purpose.

For questions regarding the appropriate use, settings, and enforcement of user permissions, typically for the purpose of either providing access to shared resources or restricting access to private resources.

The MediaStore provider contains meta data for all available media on both internal and external storage devices.

A URI scheme is the top level of the Uniform Resource Identifier(URI) naming structure in computer networking.

Nearest neighbors are points (or other objects) in close proximity to a given location in some multi-dimensional space, e.g. a plane. Finding such neighbors lies at the core of several algorithms for various applications.

The Google Contact API allows users to programmatically interact with the Google Contacts application, which is a web based contact management application by Google. Use this tag for programming questions related to using the Google Contacts API. General computing questions about using the Google Contacts web application is off topic for Stack Overflow.

Alfresco Share is a web-based collaboration environment for managing documents, wiki content, blogs and more.

Public-key (or asymmetric) cryptography is a form of cryptography that does not require common secrets between the communicating partners.

Zapier is a tool that allows you to connect apps you use every day to automate tasks and save time.

In web programming, long-polling is an emulation of pushing data, implemented by repeated polling with delayed response.

xmlreader - Represents a reader that provides fast, noncached, forward-only access to XML data.