Creates an IColumnArray object suitable for adding new variables to an ILPMatrix as empty columns.

Creates an IColumn object suitable for adding a new variable to the objective obj as a linear term with coefficient val.

Creates an IColumn object suitable for adding a new variable to constraint rng as a linear term with coefficient val.

Creates an IColumn object suitable for adding a new variable to an LP matrix as a new column. Note, that the column of the LP matrix is only created when creating a variable with the returned IColumn object but not when calling this method.

Creates an IColumnArray object suitable for adding num new variables to the objective obj as linear terms with coefficients specified in val.

Creates an IColumnArray suitable for adding num new variables to constraint IRange as linear terms with coefficients specified in val.