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[Caml-list] Printf question
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Date: -- (:)
From: Alain.Frisch@e...
Subject: Re: [Caml-list] Printf question
On Fri, 26 Sep 2003, Richard Jones wrote:

> I want to write a function which is a bit like Printf.printf, but
> handles the %s placeholder differently. It needs to do SQL-style
> escaping, eg:
> 	my_printf "The string: %s" "string with 'quotes'"

If you're ready to write

  <:my_printf<The string: %s> "string with 'quotes'"

instead, you can write your own quotation expander with Camlp4 and
implement the behavior you want.  Mmmh, a re-implementation of the
Printf and Format modules with this technique would be nice.
And also for Scanf (with a pattern quotation expander?).

Yes, the typing of the printf functions are magic, and their
implementation also. You cannot adapt their behavior without hacking the
compiler and using the Obj module.

-- Alain

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