Re: Ann: URI quasiquotes library

On Mon, Jul 8, 2013 at 9:56 AM, Jan Wielemaker <[email protected]> wrote:

> You could also go for:
>
>         {|uri(Base)||to/resource|},
>

Good suggestion.

Glancing the code, and also from previous experience, we
> probably need some functional notation library.  Functions
> come very handy with quasi quotations as some of the work
> always needs to be done at runtime.
>

I agree that functional notation is convenient.  The packs
library(func)<http://www.swi-prolog.org/pack/list?p=func>
 and library(function_expansion)<http://www.swi-prolog.org/pack/list?p=function_expansion>
are
two of my favorites.

However, this functional notation need not be readable for
> the user.  Possibly we should introduce a functional notation
> library that does not affect normal Prolog syntax, but can be
> enabled by default.  Something like '$EVAL'(Term).
>

How do you imagine '$EVAL'(Term) behaving?  What kind of Term values are
allowed?  One of the most common patterns I use with
library(function_expansion) is to treat this:

    foo('$EVAL'(Term))

as if the code were this:

    call(Term, Output),
    foo(Output)

Is that what you have in mind?

-- 
Michael
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