A programming language lets the programmer express data ... However, programmers "make up" names for the functions (subroutines) in their own programs, and they make up dozens of them, essentially ...

A programming language structure wherein the data and ... to the creation of self-contained modules that bind processing functions to the data. These user-defined data types are called "classes ...

The functions .C and .Call. provide a standard interface to compiled code that has been linked into R. These functions are explored in the following presentation.