sub-id.hpp File Reference

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Description

Extensible symbolic ID type.

Remarks

this is a design sketch (from 9/2009) an not used anywhere as of 3/2017...

My observation is that, during design, I did run again and again into a specific situation, which I then needed to circumvent in lack of a first class solution. Learning from that experiences, I start building this structured ID template.

• it shall be an symbolic identifier, not an artificial ID
• the basic value set should be limited and statically type safe.
• possibility of structured adornments and variations
• optionally concealing these extensions from the interface level

The first attempt to build such an entity is based on standard techniques, disregarding performance and memory footprint considerations.

Todo:

1/2016 this idea seems very reasonable, and we should just make it robust and usable, along the lines pointed out by that draft

• use std::tuple as storage
• remove the format-util dependency (!) ////////////////////////////////TICKET #985
• provide a hash implementation for real
• extend to arbitrary number of sub-dimensions (variadic)
• implement comparisons as you'd do for any algebraic type
• provide a metaprogramming facility to get an id tuple

See also

SubID_test

MultiFact

Definition in file sub-id.hpp.

#include "lib/format-util.hpp"
#include <boost/functional/hash.hpp>
#include <string>

Classes
class	ExtendedSubId< I, SUZ >
class	SubId< I >
class	SubID
class	SubId< I >

Functions
size_t	hash_value (SubID const &sID)
bool	operator== (SubID const &id1, SubID const &id2)

Namespaces
	lib
	Implementation namespace for support and library code.