is_permutation range version missing
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Assessment
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Newbie friendliness
- 35/100
Research direction
Start with boost::algorithm::is_permutation and reproduce the two-range call using the linked Godbolt example. Compare the desired boost::ranges::is_permutation interface with std::ranges::is_permutation; done means two ranges are accepted and invalid iterator interpretation is prevented by the appropriate concept checks.
Written by the indexing model from the issue text.
Description
There is no boost::ranges::is_permutation
Passing two ranges to boost::algorithm::is_permutation yields this error. The first parameter is correctly matched and the second parameter is incorrectly interpreted as a ForwardIterator without any BOOST_CONCEPT checks:
https://godbolt.org/z/TCE8Xm
It is also surprising that an algorithm defined in boost::algorithm takes a range as a first parameter and an iterator as the second parameter
Shouldn't there be a ranges version that takes two ranges? upcoming c++20 std::ranges::is_permutation takes two ranges as params:
https://eel.is/c++draft/alg.is.permutation
- Dominant language
- C++
- Stars
- 45
- Forks
- 104
- PR merge metrics
- No merged PRs in 30d
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