\begin{ccRefFunctionObjectConcept}{AlgebraicStructureTraits::IsOne} \ccDefinition \ccc{AdaptableUnaryFunction}, returns true in case the argument is the one of the ring. \ccRefines \ccc{AdaptableUnaryFunction} \ccTypes \ccNestedType{result_type} { Type convertible to \ccc{bool}.} \ccNestedType{argument_type} { Is \ccc{AlgebraicStructureTraits::Type}.} \ccOperations \ccCreationVariable{is_one} \ccThree{xxxxxxxxxxx}{xxxxxxxxxxx}{} \ccMethod{result_type operator()(argument_type x);}{ returns true in case $x$ is the one of the ring. } %\ccHasModels \ccSeeAlso \ccRefIdfierPage{AlgebraicStructureTraits} \end{ccRefFunctionObjectConcept}