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# <ConsistencyModule:> table(+Vars, ++Table)

Constrain Vars' solutions to be those defined by the tuples in Table.
*Vars*
- Collection of N (domain) variables or integers,
or a collection of a collection of N (domain) variables or integers.
*Table*
- Collection of tuples, each of which is a collection
of N integer values

## Description

table is an extensional constraint or user defined constraint, i.e.
the solutions for the each posted constraint is explicitly defined within
the constraint. Each table constraint specifies the solutions to N
variables, with all the solutions for this constraint specified in Table,
in the form of tuples, each of N values that is one solution to the
constraint.
Vars represents the variables that are to be satisfied for this
constraint. It can be one collection of N variables (or integers),
or a collection of a collections of N variables (or integers), if
the constraint is to be satisfied by more than one collection of
variables. Posting the constraint with multiple collections of
variables is logically equivalent to posting individual table
constraint with the same Table for each collection, but should be
more efficient as the same Table is shared by all the collections.

ConsistencyModule is the optional module specification to give the
consistency level for the propagation for this constraint:
gfd_gac for generalised arc consistency (domain consistency).

This constraint is known as in_relation in the global constraint catalog,
with the allowance for multiple collections of variables taken from
SICStus Prolog's table/2 constraint. This constraint is implemented in
Gecode as the extensional() constraint with the variant that takes a
TupleSet as an argument.

## Examples

[eclipse 9]: table([5,3,3], [[](5,2,3),[](5,2,6),[](5,3,3)]). % succeed
[eclipse 10]: table([[5,3,3],[5,2,3]],
[[](5,2,3),[](5,2,6),[](5,3,3)]). % succeed
[eclipse 11]: table([5,3,2], [[](5,2,3),[](5,2,6),[](5,3,3)]). % fail
[eclipse 12]: L = [A,B,C], table(L, [[](5,2,3),[](5,2,6),[](5,3,3)]),
labeling(L), writeln(L), fail.
[5, 2, 3]
[5, 2, 6]
[5, 3, 3]
No (0.00s cpu)