Guile Reference Manual
17. An Overview of Guile Programming
Guile is designed as an extension language interpreter that is
straightforward to integrate with applications written in C (and C++).
The big win here for the application developer is that Guile
integration, as the Guile web page says, "lowers your project's
hacktivation energy." Lowering the hacktivation energy means that you,
as the application developer, and your users, reap the benefits
that flow from being able to extend the application in a high level
extension language rather than in plain old C.
In abstract terms, it's difficult to explain what this really means and
what the integration process involves, so instead let's begin by jumping
straight into an example of how you might integrate Guile into an
existing program, and what you could expect to gain by so doing. With
that example under our belts, we'll then return to a more general
analysis of the arguments involved and the range of programming options