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URL abstraction

We will here mention a very useful area of abstraction, namely the possibility to abstracts from part of the details in an URL

By abstracting from certain details in an URL it becomes possible to redirect a set of URLs systematically via redefinition of a single Scheme function

  • The URL of this slide page:

    • http://www.cs.auc.dk/~normark/scheme/slides/lugm-99-amsterdam/html/lugm99-slide-url-abstractions.html

  • A possible abstraction of this URL:

    • (laml-root-url lugm-slides  (slide-url 'lugm99 'url-abstractions))

We have used this technique to 'switch' all addresses in a large material from an Internet location to a location on a CD