From: Joel VanderWerf <vjoel@...>
Date: 2002-02-19T12:06:25+09:00
Subject: the proc argument to Marshal.load


Something's funny about the second arg to Marshal.load:

Marshal.load((Marshal.dump [0.5,1,[2],"three"]), proc {|x| p x})

==>

[]
0.5
[]
"three"
[0.5, 1, [2], "three"]	## this is return value, not output of 'p x'


I guess 1 and 2 never showed up because they're immediate values,
whereas 0.5 is boxed, though it has immutable value semantics. Is this a
bug?

Why didn't [2] show up? And why didn't the whole array show up? Well, I
guess they both did, but before values were restored to them. That
accounts for the two [].

What is this behavior for? Wouldn't you rather work with the
deserialized object than with the blank object before it is restored?

I notice the proc argument isn't mentioned in RiaN--is it deprecated?

--
Joel VanderWerf                          California PATH, UC Berkeley
mailto:vjoel@path.berkeley.edu                     Ph. (510) 231-9446
http://www.path.berkeley.edu                       FAX (510) 231-9512