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WritableFieldTuple concept

A type T is a WritableFieldTuple if it's a std::tuple specialization, or a reference to one, and all element types fulfill the exposition-only concept WritableField. Empty tuples satisfy WritableFieldTuple.

A type is a WritableField if it can be used to represent a statement parameter value to be sent to the server. A type T satisfies WritableField if it is any of the types listed in this table, or a (possibly cv-qualified) reference to any of them. More types may be added in future releases.


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