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keyword procedures?

From: Thomas Bushnell, BSG
Subject: keyword procedures?
Date: 22 Jun 2002 12:54:10 -0700
User-agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.2

The guile manual suggests that Guile has support keyword arguments,
but contains no information beyond a chapter heading.

But it looks like it's in ice-9/optarg.scm.  So some questions:

  *Exactly* when are default expressions evaluated, and with what
  bindings already made?

  I need to generate keywords programmatically.  What is the analog of
  string->symbol for keywords, and can you give an example of its use?

  Is lambda* more widely implemented than just in Guile?


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