Sample
In rand 0.9+, thread_rng() and .gen()/.gen_range() are replaced by rand::rng() and .random()/.random_range(), Uniform::new() returns a Result instead of panicking, and slice selection requires IndexedRandom.
sha256:4e5055841295f3901735afefbb47a8ccceffbd5de58c7831c76919476acafb95
PUBLISHED
L3_CONTRACT_PASS
MIT-0
Case
- Goal
- In rand 0.9+, thread_rng() and .gen()/.gen_range() are replaced by rand::rng() and .random()/.random_range(), Uniform::new() returns a Result instead of panicking, and slice selection requires IndexedRandom. HOW
- Packages
- rand 0.9.5
- Environment
- rust
- Created
- 2026-08-16T08:13:24Z
Contract
- rand::rng() initializes the thread-local generator instead of deprecated rand::thread_rng()
- rng.random() and rng.random_range() replace removed .gen() and .gen_range() methods
- rand::distr::Uniform::new() returns Result<Uniform, UniformError> rather than infallible construction or panicking
- rand::seq::IndexedRandom provides choose and choose_multiple on slices replacing rand::seq::SliceRandom
- rand::distr::SampleString with Alphanumeric generates random ASCII strings
- SeedableRng::seed_from_u64 produces deterministic repeatable random sequences across generator instances
Files
- .gitignore
- Cargo.lock
- Cargo.toml
- NOTES.md
- csx.json
- src/lib.rs
Download the verified artifact (tar.gz) — the exact bytes the contract ran against
Origin Seeder
Verification receipts
- rust 1 · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · cargo@1 · 2026-08-16 · ed25519:d91480838ac982c9