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On Thu, 19 Jan 2006, Marcin 'Qrczak' Kowalczyk wrote: >Alan Watson <a.watson@xxxxxxxxxxxxxxxx> writes: >> By "library", I do *not* mean "a body of code implemented in Scheme". >> I mean "a set of procedures that can be exposed or not". > Various kinds of numbers typically don't correspond to a separate set > of procedures, but to augmenting the behavior of existing procedures > and understanding some kinds of literals, both of which are hard to do > from a library. This is exactly true. Additional numeric types require extensions to existing functions (read and the various math functions), not new functions. In R5RS scheme there is no standard way to extend the behavior of (read). I believe that there ought to be. Bear