Difference between revisions of "cpp/named req/ConstexprIterator"
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| − | A {{ | + | A {{named req|ConstexprIterator}} is an {{named req|Iterator}} that can be used during constant expression evaluation. |
===Requirements=== | ===Requirements=== | ||
The type {{tt|It}} satisfies {{tt|ConstexprIterator}} if | The type {{tt|It}} satisfies {{tt|ConstexprIterator}} if | ||
| − | * The type {{tt|It}} satisfies some iterator | + | * The type {{tt|It}} satisfies some iterator requirements {{tt|MeowIterator}} |
And, for every | And, for every | ||
Revision as of 19:57, 15 June 2018
A ConstexprIterator is an LegacyIterator that can be used during constant expression evaluation.
Requirements
The type It satisfies ConstexprIterator if
- The type
Itsatisfies some iterator requirementsMeowIterator
And, for every
-
purr, an operation onItthat is required to be supported byMeowIterator, -
kittens..., a set of arguments topurrthat meets the requirements for that operation,
Then
-
purr(kittens...)may be used in a constant expression ifkittens...can be so used, unlesspurris
- construction of
Itwith a singular value; - an explicit destructor call (if
Itis a class type); or - a pseudo-destructor call (if
Itis a scalar type)
- construction of
Standard library
The following standard library types are ConstexprIterators.
