Difference between revisions of "cpp/named req/ConstexprIterator"
From cppreference.com
(→Requirements: until 20) |
(the named requirement is since c++20 itself...) |
||
| Line 15: | Line 15: | ||
Then | Then | ||
| − | * {{tt|purr(kittens...)}} may be used in a constant expression if {{tt|kittens...}} can be so used | + | * {{tt|purr(kittens...)}} may be used in a constant expression if {{tt|kittens...}} can be so used |
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
===Standard library=== | ===Standard library=== | ||
Revision as of 09:16, 11 February 2020
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 requirements MeowIterator
And, for every
-
purr, an operation onItthat is required to be supported by MeowIterator, -
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
Standard library
The following standard library types are ConstexprIterators.
- array::iterator and array::const_iterator.
- basic_string_view::iterator.
- span::iterator and span::const_iterator.
