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:
 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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 | inline | 
Two Cols are equal if and only if they point to the same LP column or both are invalid.
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 | inline | 
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 | inline | 
To allow the use of this object in std::map or similar associative container we require this.
 1.8.5
 1.8.5