Re: GIT version: values

[Andy Wingo]

Hi Hans,

On Thu 27 Jan 2011 00:34, Hans Aberg <address@hidden> writes:

>>    If you wish to preserve a potentially
>>    multiply-valued return, you will need to set up a multiple-value
>>    continuation, using `call-with-values'.
>
> But this is false.

According to the standard, passing an unintended number of values to a
continuation is undefined.  To portably preserve a potentially
multiply-valued return, you need call-with-values.

You can still implement other paradigms on top of this.  If you want to
express some semantics that is not specified in the report, write a
macro that wraps your expressions in call-with-values.  This is
effectively what we will do for Lua, for example.

Regards,

Andy
-- 
http://wingolog.org/