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Class template zip

boost::unit_test::data::monomorphic::zip — Zip datasets.

Synopsis

// In header: <boost/test/data/monomorphic/zip.hpp>

template<typename DataSet1, typename DataSet2> 
class zip {
public:
  // member classes/structs/unions

  struct iterator {
    // types
    typedef decltype(sample_merge(*std::declval< dataset1_iter >(), *std::declval< dataset2_iter >())) iterator_sample;

    // public member functions
    explicit iterator(dataset1_iter, dataset2_iter);
    auto operator*() const;
    void operator++();
  };

  // public member functions
  zip(DataSet1 &&, DataSet2 &&);
  zip(zip &&);
  data::size_t size() const;
  iterator begin() const;

  // private member functions
  data::size_t zip_size() const;

  // public data members
  static const int arity;
};

Description

A zip of two datasets is a dataset whose arity is the sum of the operand datasets arity. The size is given by the function creating the instance (see operator^ on datasets).

`zip` public member functions

```
zip(DataSet1 && ds1, DataSet2 && ds2);
```
Constructor.
The datasets are moved and not copied.
```
zip(zip && j);
```
Move constructor.
```
data::size_t size() const;
```
```
iterator begin() const;
```

`zip` private member functions

```
data::size_t zip_size() const;
```
Handles the sise of the resulting zipped dataset.