Dedicated adaptor fetching data from an object member
Nobody has claimed this yet.
Assessment
- Difficulty
- 5/5
- Estimated time
- Over a week
- Newbie friendliness
- 20/100
- Issue type
- Feature
- Clarity
- Needs clarification
- Activity status
- Stale
- Tech stack
- cpp
- Domain
- backend-api-design
Research direction
Start by reviewing the Boost.Range adaptor APIs, especially transformed, and determine whether the proposed fetch pattern is generic enough for the public API. The issue names no files or tests, so first identify the relevant adaptor implementation and test locations; done would require an agreed API design and coverage for member-pointer usage.
Written by the indexing model from the issue text.
Description
In order to make code even more easily readable, I started encapsulating the creation of a "transform" range adaptor that accesses a member variable:
inline constexpr auto fetch = [](auto memberPtr)
{
return boost::adaptors::transformed(std::bind(memberPtr, std::placeholders::_1));
};
// example
sort(c | fetch(&Object::name));
This solves the boiler-plate code required otherwise:
sort(c | transformed(std::bind(&Object::name, std::placeholders::_1)));
Do you think this is a generic enough pattern worthwhile to be added to "boost range"?
- Dominant language
- C++
- Stars
- 45
- Forks
- 104
- PR merge metrics
- No merged PRs in 30d
Getting set up
This project ships no dev container, Dockerfile or contributing guide, so setting up is up to you: start from its README, and see our first-contribution guide for the general steps.
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
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