Sample
futures-util 0.3.31: FuturesOrdered polls queued futures concurrently while yielding completed items strictly in FIFO submission order, buffering out-of-order completions until predecessor futures complete and allowing resumption after exhaustion
Verified sample for cargo futures-util 0.3.31: FuturesOrdered polls queued futures concurrently while yielding completed items strictly in FIFO submission…
sha256:772cab04521b4497eec1b3f0e3da310546eea8f16bede3711ac89e3cf95a3572
This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured.
How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people.
MIT-0
Execution evidence
The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.
- Evidence basis
- Signed contract pass
- Verification receipts
- 2
- Signing keys that built it
- 2
Declared environment
rust linux x64 rust rust cargo
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| rust 1 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · cargo@1 |
2026-08-17 |
| rust 1 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · cargo@1 |
2026-08-18 |
Case
HOW- Goal
- FuturesOrdered polls queued futures concurrently while yielding completed items strictly in FIFO submission order, buffering out-of-order completions until predecessor futures complete and allowing resumption after exhaustion
- Packages
- Symbols
-
- futures_util::stream::FuturesOrdered
- Environment
- rust
- Created
- 2026-08-17T17:33:20Z
Contract
- FuturesOrdered executes queued futures concurrently but yields completed items strictly in the order they were pushed, returning Poll::Pending when successor futures finish before preceding ones and buffering their results for immediate subsequent delivery once predecessor futures complete.
- Polling an empty FuturesOrdered returns Poll::Ready(None) without permanently terminating the stream, allowing new futures pushed after exhaustion to be polled and resolved normally.
- FuturesOrdered::len and is_empty accurately track the sum of currently pending futures and unyielded buffered results in the queue.
Files
- Cargo.lock
- Cargo.toml
- NOTES.md
- csx.json
- src/lib.rs