\begin{ccRefConcept}{CombinationElement}

\ccDefinition

A \ccRefName\ can be used as template parameter for the class
\ccc{Combination_enumerator<CombinationElement>}.

\ccCreationVariable{e}

\ccCreation

\ccConstructor{CombinationElement(const CombinationElement & e2)}{Copy
constructor.}

\ccOperations

\ccMethod{void operator++();}{Incrementation of \ccVar.}

\ccMethod{void operator--();}{Decrementation of \ccVar.}

\ccMethod{bool operator<(const CombinationElement & e2);}{Total order comparison.}

\ccMethod{bool operator==(const CombinationElement & e2);}{Equality test.}

\ccMethod{CombinationElement operator+(int i);}{%
Equivalent to calling \ccc{++}\ccVar\ ~\ccc{i} times if \ccc{i} is positive.
Equivalent to calling \ccc{--}\ccVar\ ~\ccc{(-i)} times if \ccc{i} is negative.}

\ccMethod{int operator-(const CombinationElement & e2);}{Compute the difference
\ccc{d} between \ccc{e2} and \ccVar\ so that \ccc{e2+d==e}.}

\ccHasModels

Any integer type (\ccc{char}, \ccc{short}, \ccc{int}, \ccc{long}, etc.)

Pointers

Random access iterators

\ccSeeAlso

\ccc{Combination_enumerator<CombinationElement>}

\end{ccRefConcept}