Do calls f for each exported variable.

Get retrieves a named exported variable.

Publish declares a named exported variable.

Float is a 64-bit float variable that satisfies the Var interface.

Int is a 64-bit integer variable that satisfies the Var interface.

KeyValue represents a single entry in a Map.

Map is a string-to-Var map variable that satisfies the Var interface.

String is a string variable, and satisfies the Var interface.

Var is an abstract type for all exported variables.

Func implements Var by calling the function and formatting the returned value using JSON.