static std::map< std::string, Attribute > STR_TO_ATTR
map from attribute string to types
static std::map< Attribute, std::string > ATTR_TO_STR
map from attribute types to strings
static Attribute attribute(const std::string &attribute_str)
attribute
static std::string attribute_str(const Attribute &attribute)
attribute_str
iterator(field< oT > &in_M, const bool at_end=false)