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I can't find it anywhere on the web (and I don't want to install it). Is the R language a compiled language? How fast does it run a pre-written script? Does it do any kind of compilation, or just execute instructions line by line?
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R is an interpreted language; users can access it through a command-line interpreter. If a user types 2+2 at the R command prompt and presses enter, the computer replies with 4. R supports procedural programming with functions and, for some functions, object-oriented programming with generic functions.
In general, the language itself is not compiled or interpreted. So, R could be either interpreted or compiled. Nonetheless, in the most common implementation, R is interpreted.
R is an open source programming language that's optimized for statistical analysis and data visualization. Developed in 1992, R has a rich ecosystem with complex data models and elegant tools for data reporting.
R is an interpreted, not a compiled language (unlike, for example, C, C++ and Fortran): the machine code is generated on the fly by a program called the interpreter. By contrast, a compiler would first read the entire code and then generate an optimized executable program.
In most cases R is an interpreted language that runs in a read-evaluate-print loop. There are numerous extensions to R that are written in other languages like C and Fortran where speed or interfacing with native libraries is helpful.
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