Changes between Initial Version and Version 1 of Ticket #345

Timestamp:

02/19/10 12:04:09 (15 years ago)

Author:

Peter Kovacs

Comment:

Two possiblities were discussed in #326 (see details and reasons there).

1. We could use the Expr type for this purpose, since its implementation is suitable for that (it stores column-value pairs). However, it would be strange, because the name of the class and its members reflects the other purpose for which the class can be used. Now it is used only for storing linear expressions, i.e. certain coefficients are assigned to the variables, and all namings correspond to this usage.

2. We could introduce another class, e.g. Solution for this purpose, which could use the same or similar implementation as Expr, but its members would have names that are more suitable for this purpose (e.g. value instead of coefficient). This class could be a wrapper for Expr or have a separate implementation. However, both ways would make the code maintenance harder.

Of course, DualExpr or DualSolution could be used for stroing the dual solution.

Another important question is the names of the functions that can be used to obtain the primal/dual solution.