Sample
serde 1.0.229: Parsing scientific notation numbers with serde_json arbitrary_precision normalizes positive and uppercase exponents to explicit lowercase e+ formatting matching zmij float serialization starting in 1.0.149
Verified sample for cargo serde 1.0.229: Parsing scientific notation numbers with serde_json arbitrary_precision normalizes positive and uppercase exponents…
sha256:f3054adccb9b7e7b714ef0724134ea047bd70836a71c6f313d1b11bff9b1aae9
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 |
2026-08-16 |
| 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
- Parsing scientific notation numbers with serde_json arbitrary_precision normalizes positive and uppercase exponents to explicit lowercase e+ formatting matching zmij float serialization starting in 1.0.149
- Packages
- Symbols
-
- serde_json::Number
- serde_json::from_str
- serde_json::to_string
- serde_json::Value
- Environment
- rust
- Created
- 2026-08-16T05:31:42Z
Contract
- assert serde_json from_str normalizes arbitrary_precision positive exponents without sign from 1e999 to explicit 1e+999 formatting
- assert serde_json from_str normalizes uppercase E exponents with or without sign from 1E999 and 1E+999 to 1e+999
- assert serde_json from_str normalizes decimal scientific notation 2.3e999 to explicit 2.3e+999 format
- assert serde_json from_str normalizes negative numbers with uppercase exponents -1E999 to -1e+999
- assert serde_json to_string serializes Value and structs containing arbitrary_precision numbers with normalized e+ exponents
Files
- .gitignore
- Cargo.lock
- Cargo.toml
- NOTES.md
- csx.json
- src/lib.rs