range stuff

[Michel Fortin]

On 2009-02-16 20:21:00 -0500, superdan <super at dan.org> said:

> a'ight i've read all range stuff n ruminated on it for a while. yer 
> ranges suck goat balls. something's amiss.
> 
> yer have ranges that generate stuff.  some even ferever. then yer have 
> ranges that eat stuff output ranges that is. but there's no range that 
> has both input and output. some sort of filter ranges. yer should 
> connect stuff together to get chains n stuff. see? i'm sayin': why 
> would ya have a piehole & an asshole if yer don't have a stomach.
> 
> i/o ranges are a missing link. if yer smart u can unify range stuff and 
> stream stuff together. then stream or range it's all the same. not sure 
> its possible but if it is only yer can pull it. that would be dogs 
> bollocks.

Interesting. In fact I started a prototype of some kind of filter range 
for tokenizing XML: takes characters and gives tokens. That said, what 
you get is an input range (you can read tokens) that you build from an 
other input range (character range). So while it may fit the definition 
of a filter range, it may not be what you're thinking about.

What you want, an output range linked to an input range makes me think 
of the XmlEventReaderToWriter class in BerkelyDB XML, although in 
reverse (writer to reader) since ranges aren't pushing events, but 
pulling data when requested.
<http://www.oracle.com/technology/documentation/berkeley-db/xml/api_cxx/frame.html>

-- 


Michel Fortin
michel.fortin at michelf.com
http://michelf.com/