swiftlang/swift
The Swift Programming Language
In plain words
Outside PRs: 9 in 10 merged. First reply usually within 34 h. 4 starter issues are available now. Replies got faster this month.
Outside PRs merged
91%
896 merged, 91 closed, 180 still open
Higher than 72% of 565 other measured repositories
First human reply
34 h
median of 1167 outside PRs, 333 unanswered
Time to merge
2.8 days
896 of 1167 outside PRs merged
Outside PRs opened 30 to 120 days ago, so each has had time to be answered. A figure needs at least 5 pull requests, otherwise it reads "Not enough data". How this is calculated · A number looks wrong?
Your first steps here
If you have never contributed to this project, do these in order.
- 1
Read the contributing guide
It says how to set the project up and what the maintainers expect in a pull request.
Open the guide - 2
Take this free issue
Compiler shouldn't suggest isolated conformance to SendableMetatype refining protocol
Open issue #92370 - 3
Know where to ask
No chat was found. Ask on the issue you are working on; that is where maintainers look.
- 4
Open a small pull request
Link the issue in it. A first reply here usually takes 34 h; until then, silence is normal.
What happens to an outside pull request
Every pull request opened by someone outside the core team, 30 to 120 days ago.
- Opened by outsiders1,167100%
- Got a human reply83471%
- Merged89677%
Time to first reply
After 2 days, 54% of outside PRs had a reply from a person. After a week, 64%. Bots do not count.
The last 52 weeks
Got faster. Median first reply was 20 h over the last four weeks (574 PRs) and 43 h over the four before (446 PRs).
Starter issues
Issues labelled for beginners, with their real state. Available means open, unassigned, no linked pull request, nobody has claimed it in the last 14 days, and it was updated in the last 60 days.
- Available
- 4
- Claimed
- 20
- Has a pull request
- 0
- Stale
- 20
When replies arrive
All maintainers counted together. Shown only when at least 3 people replied in the last 90 days, so it never describes one person.
Replies are most likely between 21:00 and 00:00 (India time).
Show as table
| Hour (India time) | Replies, all weekdays |
|---|---|
| 00:00 | 71 |
| 01:00 | 65 |
| 02:00 | 63 |
| 03:00 | 47 |
| 04:00 | 46 |
| 05:00 | 35 |
| 06:00 | 25 |
| 07:00 | 26 |
| 08:00 | 33 |
| 09:00 | 35 |
| 10:00 | 33 |
| 11:00 | 29 |
| 12:00 | 25 |
| 13:00 | 20 |
| 14:00 | 16 |
| 15:00 | 17 |
| 16:00 | 17 |
| 17:00 | 19 |
| 18:00 | 30 |
| 19:00 | 46 |
| 20:00 | 79 |
| 21:00 | 110 |
| 22:00 | 110 |
| 23:00 | 100 |
How to start
- Contributing guidefound
- Code of conductfound
- Issue templatesfound
- Dev container for one-step setupnot found
- No CLA or sign-off requirement was found.
Where the project talks
No chat or mailing list link was found in the README or contributing guide.
Activity
- Commits, 90 days
- 4,677
- Releases, 12 months
- 9
- Active maintainers
- 74
- Last push
- 9 Oct 2026
Stack
Badge and feed
Two ways to use these figures outside this page.
For maintainers: a README badge
Shows newcomers how quickly this project answers and how often it merges. Paste the line into your README; the badge updates with the index.
[](https://contributable.vercel.app/repo/swiftlang/swift)[](https://contributable.vercel.app/repo/swiftlang/swift)For contributors: follow new issues
Add the feed to a feed reader (Feedly, Inoreader, Thunderbird) and you hear about new free starter issues here without checking the site.
https://contributable.vercel.app/feed/repo/swiftlang/swiftFor developers: every figure on this page as JSON at /api/v1/repos/swiftlang/swift.
Similar repositories
Same main language (Swift), most shared frameworks and topics first, then the faster reply.
OneBusAway for iOS, written in Swift.
- First reply
- 2.5 days