P0792R14 `function_ref`: A Type-Erased Callable Reference
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- C++
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Description
WG21-P0792R14 function_ref: A Type-Erased Callable Reference
WG21-P3774R1 Rename nontype_t To constant_arg_t
WG21-P3948R1 Use constant_wrapper In function_ref
WG21-P3961R1 Less Double Indirection In function_ref
LWG-4256 Incorrect constraints for function_ref constructors from nontype_t
LWG-4425 CTAD function_ref of data member pointer should produce noexcept signature
Feature-test macro:
#define __cpp_lib_function_ref 202604L
Note: We are not yet accepting PRs for C++26 features.
Contributor guide
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.
Research direction
Start by reading the listed WG21 and LWG papers to understand the proposed function_ref feature and its related wording changes. The issue names no source files or tests; completion would require an implementation matching those papers and exposing __cpp_lib_function_ref 202604L, but it notes that PRs are not yet being accepted.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- tooling
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Active
- Clarity
- Needs clarification
- Newbie friendliness
- 20/100