access access accessFirst accessPrimary appendExt assignBintableExt assignBintableExt assignImageExt hduCount initBintableExt initImageExt initRecordExt m_hdus MefFile operator[] primary primaryIndex readHduNames readHduNamesVersions select ~MefFile

accessFirst() template<class T = Hdu> const T& Euclid::Fits::MefFile::accessFirst ( const std::string &  name, long  version = 0  ) Access the first HDU with given name, type and version. Template Parameters T The type of HDU, or Hdu to not check the type Parameters name The HDU name version The HDU version, or 0 to not check the version The template parameter is used to disambiguate when two extensions of different types have the same name, if set to ImageHdu or BintableHdu. For example, in a file with an image extension and a binary table extension both named "EXT", accessFirst<ImageHdu>("EXT") returns the image extension, while accessFirst<BintableHdu>("EXT") returns the binary table extension, and accessFirst<Hdu>("EXT") returns whichever of the two has the smallest index. In the case where several HDUs of same type have the same name (which is discouraged by the standard, but not forbidden), method readHduNames() should be used to get the indices and then access(long) should be called. See also access(long) access(const std::string&)