[Coin-discuss] OsiSolverInterface use and in particular OsiClpSolverInterface

[John J Forrest]

I am going to make sure that the following works in Clp:

empty model
add rows (with no elements)
add columns (with elements)

and the other way round.  I don't like the idea of implicitly adding
columns by adding rows.

I have modified unitTest.cpp but I have not checked it in - should I as it
may break other solvers?  For instance it semi-broke Osl  (it complained
about rows with no elements).  At present Clp does fail ungracefully.  I
should have that fixed in a few hours.

John