Forum: Ruby Re: Shortcut for .pack("p*").unpack("l").first ?

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Berger, Daniel (Guest)
on 2006-05-03 20:58
(Received via mailing list)
> > > an extension then there's probably an easier way to get at the
> > str2 = "hello"
> > # Using string addresses
> > strcmp2.call(addr1, addr2) # 0
> > strcmp2.call(addr1, addr3) # -1
>
> Now you lost me again: if you can use a string as well as a
> pointer then why bother to use the pointer? Are there places
> where you cannot do that?

Yes, pointers to pointers.  Typically for unraveling data structures.

> Just a thought: does it make sense to raise an exception or
> print a warning if the string is not frozen?  Otherwise the
> address could point into limbo...

Hm, good point.

Dan


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