Re: Support for nullable data types (by a template class?)

[Markus Elfring <Markus Elfring web de>]

> http://en.wikipedia.org/wiki/Nullable_type

Was this kind of programming interface already discussed for its use besides the
data base abstraction library for GNOME (libgda)?

How would you like to represent an unknown or intermediate value status?

Other implementation examples:
http://pocoproject.org/docs/Poco.Nullable.html
http://www.codeproject.com/KB/mcpp/CNullable.aspx
http://nullabletypes.sourceforge.net/sqltypes.html
http://www.boost.org/doc/libs/1_47_0/doc/html/boost/logic/indeterminate.html

Regards,
Markus