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Seminaire sur Lambda, un langage de script qui tourne sous Linux



        SEMINAIRE du DIRO
            (IFT 6090)
     vendredi le 10 decembre
           salle 3195
    Pavillon Andre-Aisenstadt
             11h30

CONFERENCIER :  Olin Shivers, MIT

TITRE : A universal scripting framework or
      Lambda: the ultimate "little language"

RESUMÉ :        

The "little languages" approach to systems programming is flawed:
inefficient, fragile, error-prone, inexpressive, and difficult to
compose.  A better solution is to embed task-specific sublanguages
within a powerful, syntactically extensible, universal language, such
as Scheme.  I demonstrate two such embeddings that have been
implemented in scsh, a Scheme programming environment for Unix systems
programming.  The first embedded language is a high-level
process-control notation; the second provides for Awk-like processing.
Embedding systems in this way is a powerful technique: for example,
although the embedded Awk system was implemented with 7% of the code
required for the standard C-based Awk, it is significantly more
expressive than its C counterpart.