Some I/O stream support format modifiers. The corresponding streams take a string argument in the constructor through which the user can pass additional parameters to control the behaviour of the stream. Such streams should mak use of datrw::Subformat to parse the parameter string. Since 09/2011 (V2.1 of the library) the constructors of datrw::ianystream and datrw::oanystream not taking a modifier string are deprecated and should no longer be used. The functions datrw::ianystream::open() and datrw::oanystream::open() pass modfier strings to I/O streams which support them. Information for the user is given by datrw::formatmodifiers::online_help(), which is called by datrw::online_help().

See also: datrw::iseifestream::iseifestream(), datrw::oseifestream::oseifestream(), Internal utility: Support for format modifiers, libdatrwxxtests.cc

Date: 09/2011