#ifndef STAN_LANG_AST_FUN_IS_NONEMPTY_HPP
#define STAN_LANG_AST_FUN_IS_NONEMPTY_HPP

#include <string>

namespace stan {
namespace lang {

/**
 * Returns true if the specified string contains a character other
 * than a whitespace character.
 *
 * @param s string to test
 * @return true if string contains a non-space character
 */
bool is_nonempty(const std::string& s);

}  // namespace lang
}  // namespace stan
#endif
