On Dec 23, 2003, at 4:16, Richard Jones wrote:

> I like to think of the 'string option' type as being a bit like
> two concepts in more familiar languages:
>
> (1) NULL pointers in C, or
> (2) Scalars in Perl, which can be 'undef'.

	I think of it more like SQL.  Any given variable may be defined to be 
nullable or not, but a variable that is not nullable an never be null.  
The main difference is that the compiler enforces that you check for 
null on nullable fields.

--
SPY                      My girlfriend asked me which one I like better.
pub  1024/3CAE01D5 1994/11/03 Dustin Sallings <dustin@spy.net>
|    Key fingerprint =  87 02 57 08 02 D0 DA D6  C8 0F 3E 65 51 98 D8 BE
L_______________________ I hope the answer won't upset her. ____________

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