Tracking Issue for `const_default`
Open
Nobody has claimed this yet.
C-tracking-issue
S-tracking-unimplemented
T-libs
- Dominant language
- Rust
- Stars
- 119k
- Forks
- 16.1k
- PR merge metrics
- PR metrics pending
Description
Feature gate: #![feature(const_default)]
This is a tracking issue for Default in const fn
Public API
// core::default
pub const trait Default: Sized {
fn default() -> Self;
}
impl const Default types:
- ()
- bool
- char
- std::ascii::Char
- usize
- u8
- u16
- u32
- u64
- u128
- i8
- i16
- i32
- i64
- i128
- f16
- f32
- f64
- f128
- std::marker::PhantomData<T>
- Option<T>
- std::iter::Empty<T>
- std::ptr::Alignment
- &[T]
- &mut [T]
- &str
- &mut str
- String
- Vec<T>
Steps / History
(Remember to update the S-tracking-* label when checking boxes.)
- Implementation: #134628
- Final comment period (FCP)^1
- Stabilization PR
Unresolved Questions
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 with this tracking issue, the blocked issue #143874, and implementation PR #134628. Review the listed const Default API and implementation history; the tracking work is complete when the blocking questions are resolved, the final comment period finishes, and a stabilization PR can proceed.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- compilers
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 20/100