EqualityComparable |
Detailed Description
A type is EqualityComparable if objects of that type can be compared for equality using operator==
, and if operator==
is an equivalence relation.
- Refinement Of:
- Associated Types:
- Notation:
X
A type that is a model of EqualityComparable x
,y
,z
Object of type X
- Definitions:
- Valid Expressions:
Name Expression Type requirements Return type Equality x == y
Convertible to bool
Inequality x != y
Convertible to bool
- Expression Semantics:
Name Expression Precondition Semantics Postcondition Equality x == y
x
andy
are in the domain of==
Inequality x != y
x
andy
are in the domain of==
Equivalent to !(x == y)
- Complexity Guarantees:
- Invariants:
Identity &x == &y
impliesx
==y
Reflexivity x == x
Symmetry x == y
impliesy == x
Transitivity x == y
andy == z
impliesx == z
- Type(s) Modeling this Concept:
- int
std::vector<T>
- Notes:
- See Also: