as editThisHdu header index m_cfitsioIndex m_dummyFptr m_fptr m_header m_status m_type matches readCategory readName readVersion touchThisHdu type updateChecksums updateName updateVersion verifyChecksums ~Hdu

m_status HduCategory Euclid::Fits::Hdu::m_status mutableprotected The HDU status. It is mutable because read/write operations change it. Another option to avoid such practice would be to store a record of statuses in MefFile instead.