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Class template tuple

Tuple creation functions
Tuple helper classes
Element access
Relational operators

Fusion's implementation of the TR1 Tuple is also a fusion Forward Sequence. As such the fusion tuple type provides a lot of functionality beyond that required by TR1.

Currently tuple is basically a synonym for vector, although this may be changed in future releases of fusion.

    typename T1 = unspecified,
    typename T2 = unspecified,
    typename TN = unspecified>
class tuple;