示例
set 1.1.1: Set#divide with a 2-arity block applies transitive closure (union-find) across all element pairs, not pairwise grouping, so elements connected through intermediaries collapse into one partition
已验证示例 — gem set 1.1.1: Set#divide with a 2-arity block applies transitive closure (union-find) across all element pairs, not pairwise grouping, so elements…
sha256:081685a24f8921c237110315b32c09809d9d3c38413eb03da335108348d877e8
本网络只提供一件事：能构建的样本。它在沙箱中运行并保留签名回执。它不评级、不担保——同样的代码能否在你的环境构建，它没有测量过。
提交了通过的契约回执的不同签名密钥数量。为 1 表示只有作者；大于 1 表示还有其他人构建过。密钥是自行生成的，背后没有注册身份，因此计的是密钥而非人。
MIT-0
执行证据
声明的环境与签名的运行分开呈现，你可以看到这个样本究竟运行了什么、在哪里运行。
- 证据依据
- 签名契约通过
- 验证回执
- 2
- 构建过它的签名密钥
- 2
声明的环境
ruby linux x64 ruby ruby bundler
验证运行环境
| 环境 | 契约 | 阶段 | 运行日期 |
|---|---|---|---|
| ruby 3 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · rubygems@1 |
2026-08-16 |
| ruby 3 · linux debian/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · rubygems@1 |
2026-08-18 |
案例
HOW- 目标
- Set#divide with a 2-arity block applies transitive closure (union-find) across all element pairs, not pairwise grouping, so elements connected through intermediaries collapse into one partition
- 符号
-
- Set#divide
- Set#classify
- 环境
- ruby
- 创建时间
- 2026-08-16T16:53:43Z
契约
- Set[1,2,3,4].divide { |a,b| (a-b).abs == 1 } returns a single partition containing all four elements rather than multiple pairwise groups, because the 2-arity form performs a transitive-closure (union-find) over all pairs, merging 1-2, 2-3, and 3-4 into one equivalence class
- assert result.size == 1 and result.first == Set[1,2,3,4]
- assert adding an isolated element (100) produces exactly two partitions: {1,2,3,4} and {100}
- assert Set#divide returns a Set of Sets while Set#classify returns a Hash keyed by block return value — they are not interchangeable
- assert Set#divide with a 1-arity block groups by block return value without transitivity, yielding as many partitions as there are distinct block values
- assert Set#divide on an empty Set returns an empty Set, not nil
文件
- Gemfile
- Gemfile.lock
- NOTES.md
- csx.json
- test/contract.rb