[Zope3-dev] Sum of Decimals
Shane Hathaway
shane at hathawaymix.org
Wed Feb 8 11:48:15 EST 2006
Paul Winkler wrote:
> On Wed, Feb 08, 2006 at 11:08:57AM -0500, Stephan Richter wrote:
>
>>Decimal is a new type and we have not yet declared it to be a rock.
>
>
> What is "a rock"?
A rock is an immutable object with no insecure methods. Trusted code
can pass a bare rock to untrusted code with no fear that the object will
be modified or used for breaking out of the security model. Numbers and
strings are rocks.
Shane
More information about the Zope3-dev
mailing list