array_builder.hpp

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#ifndef STAN_MATH_PRIM_FUN_ARRAY_BUILDER_HPP
#define STAN_MATH_PRIM_FUN_ARRAY_BUILDER_HPP
 
#include <stan/math/prim/meta.hpp>
#include <stan/math/prim/fun/promote_elements.hpp>
#include <vector>
 
namespace stan {
namespace math {
 
template <typename T>
class array_builder {
 private:
  std::vector<T> x_;
 
 public:
  array_builder() : x_() {}
 
  template <typename S>
  array_builder& add(const S& u) {
    x_.push_back(promote_elements<T, S>::promote(u));
    return *this;
  }
 
  std::vector<T> array() { return x_; }
};
 
}  // namespace math
}  // namespace stan
#endif