This type is used to refer to a column of the LP.
Its value remains valid and correct even after the addition or erase of other columns.
#include <lemon/lp_base.h>
Inheritance diagram for LpBase::Col:Public Member Functions | |
| Col () | |
| Default constructor. More... | |
| Col (const Invalid &) | |
| Invalid constructor & conversion. More... | |
| bool | operator== (Col c) const |
| Equality operator. More... | |
| bool | operator!= (Col c) const |
| Inequality operator. More... | |
| bool | operator< (Col c) const |
| Artificial ordering operator. More... | |
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Two Cols are equal if and only if they point to the same LP column or both are invalid.
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To allow the use of this object in std::map or similar associative container we require this.
1.8.5