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Re: Error objects in general

This page is part of the web mail archives of SRFI 77 from before July 7th, 2015. The new archives for SRFI 77 contain all messages, not just those from before July 7th, 2015.

On Sat, 29 Oct 2005, Alan Watson wrote:

> How is this different from expecting to read a list and getting #f
> instead, and not being sure if the #f appeared as a literal in the input
> stream or was generated by code called by the reader?

It's different because #f is a useful value, not a signal that some
operation failed or was invalid.  In general, operations that are
supposed to retrieve a value can fail, and then what value do they