(guile-tut.info.gz) More interesting programming with libguile

(guile-tut.info.gz) How to get started with libguile

(guile-tut.info.gz) Guile in a Library

(guile-tut.info.gz) Further examples

 
 4.4 More interesting programming with libguile
 ==============================================
 
 The `learn0' program shows how you can invoke Scheme commands from a C
 program.  This is not such a great achievement: the same could have
 been done by opening a pipe to SCM or any other Scheme interpreter.
 
   A true extension language must allow "callbacks".  Callbacks allow
 you to write C routines that can be invoked as Scheme procedures, thus
 adding new primitive procedures to Scheme.  This also means that a
 Scheme procedure can modify a C data structure.
 
   Guile allows you to define new Scheme procedures in C, and provides a
 mechanism to go back and forth between C and Scheme data types.
 
   Here is a second program, `learn1', which demonstrates these
 features.  It is split into three source files: `learn1.c',
 `c_builtins.h' and `c_builtins.c'.  I am including the code here.
 
   Notice that `learn1' uses a Scheme master world, and the C routines
 in `c_builtins.c' are simply adding new primitives to Scheme.

(guile-tut.info.gz) More interesting programming with libguile

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