access access append append_bintable append_bintable append_bintable_header append_image append_image_header append_null_bintable append_null_image appendBintable appendBintableHeader appendImage appendImageHeader appendNullBintable appendNullImage close filter find hdu_count hduCount MefFile operator[] primary read_hdu_names read_hdu_names_versions readHduNames readHduNamesVersions remove strategy strategy strategy ~MefFile

hdu_count() long hdu_count ( ) const Get the number of HDUs. As opposed to CFITSIO's HDU counting, incomplete HDUs are taken into account: it is initialized by the constructor and then updated at each modification through MefFile methods. This way, incomplete HDUs are also taken into account where CFITSIO would exclude them. This means, for example, that the initial number of HDUs in a new file is 1 instead of 0 with CFITSIO.