c3p0 is a Java library for JDBC drivers with JNDI-bindable DataSources, including DataSources that implement Connection and Statement Pooling, as described by the jdbc3 spec and jdbc2 std extension.

The reshape2 package in R contains functions that allow data to be transformed into more convenient forms.

An application programming interface key (API key) is a code passed in by computer programs calling an API (application programming interface) to identify the calling program, its developer, or its user to the Web site.

Sudoku (soo-doh-koo) is a number-placement logic puzzle. The objective is to fill a partially constructed 9×9 grid with digits so that each column, each row, and each of the nine 3×3 sub-grids that compose the grid contain all of the digits from 1 to 9.

TCP/IP is an acronym Transmission Control Protocol/Internet Protocol. It is a protocol stack that is responsible for endpoint-to-endpoint communications between two or more devices. Please use this tag if your question is specific to TCP/IP.

Type traits are syntactic extensions that allow the developer to determine at compile time various characteristics of a type. C++ support is provided by a combination of compiler support and a set of library templates. Access to the type traits is provided via the header <type_traits>

std::initializer_list is a special type in C++11 which is used to construct containers and other types from a list of values of the same type. May be implemented as a pair of pointers or pointer and length and its storage could be automatic, temporary, or static read-only.

The ROLLUP operator is useful in generating reports that contain subtotals and totals. The ROLLUP operator generates a result set that is similar to the result sets generated by the CUBE operator

UTF-16 is a character encoding that represents Unicode code points using either 2 or 4 bytes per character.

Worksheet is an Excel worksheet. It consists of cells filled with data. Choose this tag if the problem you have involves working with the Worksheet object. If you use this tag, you probably should also use Excel and VBA (or the language you use) tags.

Ramda is a functional utility library for Javascript, focusing on making it easy to build modular pipelines out of small, composable functions.