array_builder.hpp

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#ifndef __STAN__MATH__MATRIX__ARRAY_BUILDER_HPP__
#define __STAN__MATH__MATRIX__ARRAY_BUILDER_HPP__

#include <vector>
#include <stan/math/matrix/promoter.hpp>

namespace stan {
  namespace math {
    
    template <typename T>
    struct array_builder {
      std::vector<T> x_;
      array_builder() : x_() { }
      template <typename F>
      array_builder& add(const F& u) {
        T t;
        promoter<F,T>::promote(u,t);
        x_.push_back(t);
        return *this;
      }
      std::vector<T> array() {
        return x_;
      }
    };

  }
}
#endif