Structure of the class "optObj". Objects of that class are
returned by the function prepProbObj.
Arguments
encoding
utf8
Details
The intention of class optObj is, to provide a flexible
user interface to several optimization software products. The
methods here working on the slot oobj are interface functions
to low level functions invoking corresponding C functions.
Basically, the user has not to care about the nature of the solver,
or solver-specific functions. That is done by the class.