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The coding and design conventions (CDC) document was also updated.
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…ement elements() method for defining variable-length column. A variable-length column is now constructued by passing a negative column vector length. The size of a row is specified using the elements() method that makes use of the resize_data() method implemented by the derived classes. The only column type that is not yet implemented is the Bit column. Also the string columns do not yet work properly for variable-length columns.
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… the header file as inline methods. During the rework, a bug occured in the string column class that prevented from correct saving to the file. The bug was due to the fact that the wrong pointer was specified by the ptr_data() method, and then, also the GFitsTableCol::isloaded() method that worked on ptr_data() was not corrected. The ptr_data() method has been corrected for the string column class and the isloaded() method has been defined as pure virtual in GFitsTableCol, and now is implemented in the derived classes. We thus have full control over the definition of the loading state. To conform to the actual coding standards, all methods that are implemented by the table column classes in the header file are now declared inline.
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…at and remove binary_format() method. Instead of handling the column format in the derived classes, the column format for binary tables is now handled in the base class. The format codes for variable-length columns are now also supported.
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All classes our now derived from GBase. For this we had to define and to implement the clear() method for all classes. ostream and GLog friends have also been removed, as they are no implemented at the GBase level.
