{"id":45521,"date":"2023-09-10T20:29:02","date_gmt":"2022-12-11T17:24:17","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/45521-2\/"},"modified":"2024-05-03T23:06:26","modified_gmt":"2024-05-03T15:06:26","slug":"45521-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/45521-2\/","title":{"rendered":""},"content":{"rendered":"

\u306f\u3058\u3081\u306b<\/h1>\n

\u524d\u3005\u304b\u3089Rust + WebAssembly\u3067\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u53ef\u8996\u5316\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f5c\u3063\u3066\u3044\u307e\u3057\u305f\u304c\u3001\u4f7f\u3044\u52dd\u624b\u3092\u826f\u304f\u3059\u308b\u305f\u3081\u306eFFI\uff08Foreign Function Interface\uff09\u3001\u3064\u307e\u308aJavaScript\u5074\u3068Rust\u5074\u306e\u3069\u3061\u3089\u3067\u30c7\u30fc\u30bf\u3092\u6301\u3064\u306e\u304b\u3001\u305d\u3057\u3066\u4ed6\u65b9\u306b\u3069\u306e\u3088\u3046\u306a\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u3092\u63d0\u4f9b\u3059\u308b\u306e\u304b\u306e\u8a2d\u8a08\u306b\u306f\u60a9\u307e\u3055\u308c\u3066\u3044\u307e\u3057\u305f\u3002\u305d\u3053\u3067\u4eca\u56de\u306f\u3001\u30b0\u30e9\u30d5\u51e6\u7406\u306e\u57fa\u672c\u306e\u4e00\u3064\u3067\u3042\u308b\u6df1\u3055\u512a\u5148\u63a2\u7d22\uff08DFS\uff09\u3067\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u3092\u3068\u308a\u3001\u6027\u80fd\u9762\u3067\u306e\u6bd4\u8f03\u3092\u884c\u3044\u307e\u3057\u305f\u3002\u79c1\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u306f\u3001Rust\u3068JavaScript\u53cc\u65b9\u3067\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u66f8\u304f\u3053\u3068\u3082\u3042\u308b\u305f\u3081\u3001\u30b0\u30e9\u30d5\u30c7\u30fc\u30bf\u69cb\u9020\u306e\u96a3\u63a5\u30ea\u30b9\u30c8\u3068DFS\u306e\u305d\u308c\u305e\u308c\u3092JavaScript\u3068Rust\u306e\u4e21\u65b9\u3067\u5b9f\u88c5\u3057\u30014\u901a\u308a\u306e\u7d44\u307f\u5408\u308f\u305b\u3092\u6bd4\u8f03\u3057\u307e\u3059\u3002<\/p>\n

\u5b9f\u88c5<\/h1>\n

\u305d\u308c\u305e\u308c\u306e\u5b9f\u88c5\u306e\u4e00\u90e8\u3092\u8a18\u8f09\u3057\u307e\u3059\u3002\u5168\u4f53\u306e\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u306f GitHub\u306e\u30ea\u30dd\u30b8\u30c8\u30ea \u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n

\u96a3\u63a5\u30ea\u30b9\u30c8\u306eJavaScript\u306b\u3088\u308b\u5b9f\u88c5<\/h2>\n

\u4eca\u56de\u306e\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u306b\u5fc5\u8981\u6700\u4f4e\u9650\u306e\u4ee5\u4e0b\u306e4\u3064\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u5b9f\u88c5\u3057\u307e\u3059\u3002<\/p>\n

addNode(u) \uff1a\u9802\u70b9 $u$ \u3092\u8ffd\u52a0\u3059\u308b<\/p>\n

addEdge(u, v) \uff1a\u8fba $(u, v)$ \u3092\u8ffd\u52a0\u3059\u308b<\/p>\n

neighbors(u) \uff1a\u9802\u70b9 $u$ \u306e\u96a3\u63a5\u9802\u70b9\u3092\u8fd4\u3059<\/p>\n

nodeCount() \uff1a\u30b0\u30e9\u30d5\u306e\u9802\u70b9\u6570\u3092\u8fd4\u3059<\/p>\n

\u5b9f\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u4f7f\u7528\u3057\u3066\u3044\u305fJavaScript\u5b9f\u88c5\u306e\u96a3\u63a5\u30ea\u30b9\u30c8\u304b\u3089\u5fc5\u8981\u306a\u6a5f\u80fd\u306e\u307f\u3092\u53d6\u308a\u51fa\u3057\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5b9f\u88c5\u306b\u3057\u307e\u3057\u305f\u3002<\/p>\n

export<\/span> class<\/span> GraphJs<\/span> {<\/span>\r\n  constructor<\/span>()<\/span> {<\/span>\r\n    this<\/span>.<\/span>nodes<\/span> =<\/span> new<\/span> Map<\/span>();<\/span>\r\n  }<\/span>\r\n\r\n  addNode<\/span>(<\/span>u<\/span>,<\/span> obj<\/span> =<\/span> {})<\/span> {<\/span>\r\n    this<\/span>.<\/span>nodes<\/span>.<\/span>set<\/span>(<\/span>u<\/span>,<\/span> {<\/span>\r\n      neighbors<\/span>:<\/span> new<\/span> Map<\/span>(),<\/span>\r\n      data<\/span>:<\/span> obj<\/span>,<\/span>\r\n    });<\/span>\r\n    return<\/span> this<\/span>;<\/span>\r\n  }<\/span>\r\n\r\n  addEdge<\/span>(<\/span>u<\/span>,<\/span> v<\/span>,<\/span> obj<\/span> =<\/span> {})<\/span> {<\/span>\r\n    this<\/span>.<\/span>nodes<\/span>.<\/span>get<\/span>(<\/span>u<\/span>).<\/span>neighbors<\/span>.<\/span>set<\/span>(<\/span>v<\/span>,<\/span> obj<\/span>);<\/span>\r\n    this<\/span>.<\/span>nodes<\/span>.<\/span>get<\/span>(<\/span>v<\/span>).<\/span>neighbors<\/span>.<\/span>set<\/span>(<\/span>u<\/span>,<\/span> obj<\/span>);<\/span>\r\n    return<\/span> this<\/span>;<\/span>\r\n  }<\/span>\r\n\r\n  neighbors<\/span>(<\/span>u<\/span>)<\/span> {<\/span>\r\n    return<\/span> this<\/span>.<\/span>nodes<\/span>.<\/span>get<\/span>(<\/span>u<\/span>).<\/span>neighbors<\/span>.<\/span>keys<\/span>();<\/span>\r\n  }<\/span>\r\n\r\n  nodeCount<\/span>()<\/span> {<\/span>\r\n    return<\/span> this<\/span>.<\/span>nodes<\/span>.<\/span>size<\/span>;<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u9802\u70b9\u3084\u8fba\u306e\u524a\u9664\u3092\u8003\u616e\u3057\u306a\u3051\u308c\u3070\u914d\u5217\u306e\u914d\u5217\u306a\u3069\u306b\u3057\u3066\u3057\u307e\u3048\u3070\u3088\u308a\u9ad8\u901f\u5316\u304c\u3067\u304d\u307e\u3059\u304c\u3001\u3042\u308b\u7a0b\u5ea6\u5b9f\u7528\u7684\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u3092\u524d\u63d0\u3068\u3057\u3066 Map \u3092\u4f7f\u7528\u3057\u307e\u3057\u305f\u3002<\/p>\n
\u96a3\u63a5\u30ea\u30b9\u30c8\u306eRust\u306b\u3088\u308b\u5b9f\u88c5<\/h2>\n
\u96a3\u63a5\u30ea\u30b9\u30c8\u81ea\u4f53\u306fpetgraph\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002JavaScript\u5074\u304b\u3089\u30a2\u30af\u30bb\u30b9\u3059\u308b\u305f\u3081\u306b\u4ee5\u4e0b\u306e\u3088\u3046\u306bWebAssembly\u306e\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3057\u307e\u3059\u3002JavaScript\u5074\u3078\u63d0\u4f9b\u3059\u308b\u95a2\u6570\u306fJavaScript\u306b\u3088\u308b\u5b9f\u88c5\u3068\u540c\u69d8\u3067\u3059\u3002<\/p>\n
#[wasm_bindgen]<\/span>\r\nimpl<\/span> GraphRust<\/span> {<\/span>\r\n    #[wasm_bindgen(constructor)]<\/span>\r\n    pub<\/span> fn<\/span> new<\/span>()<\/span> -><\/span> GraphRust<\/span> {<\/span>\r\n        GraphRust<\/span> {<\/span>\r\n            graph<\/span>:<\/span> GraphType<\/span>::<\/span>with_capacity<\/span>(<\/span>0<\/span>,<\/span> 0<\/span>),<\/span>\r\n        }<\/span>\r\n    }<\/span>\r\n\r\n    #[wasm_bindgen(js_name<\/span> =<\/span> addNode)]<\/span>\r\n    pub<\/span> fn<\/span> add_node<\/span>(<\/span>&<\/span>mut<\/span> self<\/span>,<\/span> value<\/span>:<\/span> JsValue<\/span>)<\/span> -><\/span> usize<\/span> {<\/span>\r\n        let<\/span> value<\/span> =<\/span> if<\/span> value<\/span>.is_null<\/span>()<\/span> ||<\/span> value<\/span>.is_undefined<\/span>()<\/span> {<\/span>\r\n            Object<\/span>::<\/span>new<\/span>()<\/span>.into<\/span>()<\/span>\r\n        }<\/span> else<\/span> {<\/span>\r\n            value<\/span>\r\n        };<\/span>\r\n        self<\/span>.graph<\/span>.add_node<\/span>(<\/span>value<\/span>.into<\/span>())<\/span>.index<\/span>()<\/span>\r\n    }<\/span>\r\n\r\n    #[wasm_bindgen(js_name<\/span> =<\/span> addEdge)]<\/span>\r\n    pub<\/span> fn<\/span> add_edge<\/span>(<\/span>&<\/span>mut<\/span> self<\/span>,<\/span> u<\/span>:<\/span> usize<\/span>,<\/span> v<\/span>:<\/span> usize<\/span>,<\/span> value<\/span>:<\/span> JsValue<\/span>)<\/span> -><\/span> usize<\/span> {<\/span>\r\n        let<\/span> value<\/span> =<\/span> if<\/span> value<\/span>.is_null<\/span>()<\/span> ||<\/span> value<\/span>.is_undefined<\/span>()<\/span> {<\/span>\r\n            Object<\/span>::<\/span>new<\/span>()<\/span>.into<\/span>()<\/span>\r\n        }<\/span> else<\/span> {<\/span>\r\n            value<\/span>\r\n        };<\/span>\r\n        let<\/span> u<\/span> =<\/span> node_index<\/span>(<\/span>u<\/span>);<\/span>\r\n        let<\/span> v<\/span> =<\/span> node_index<\/span>(<\/span>v<\/span>);<\/span>\r\n        self<\/span>.graph<\/span>.add_edge<\/span>(<\/span>u<\/span>,<\/span> v<\/span>,<\/span> value<\/span>.into<\/span>())<\/span>.index<\/span>()<\/span>\r\n    }<\/span>\r\n\r\n    #[wasm_bindgen(js_name<\/span> =<\/span> neighbors)]<\/span>\r\n    pub<\/span> fn<\/span> neighbors<\/span>(<\/span>&<\/span>self<\/span>,<\/span> a<\/span>:<\/span> usize<\/span>)<\/span> -><\/span> Array<\/span> {<\/span>\r\n        self<\/span>.graph<\/span>\r\n            .neighbors<\/span>(<\/span>node_index<\/span>(<\/span>a<\/span>))<\/span>\r\n            .map<\/span>(|<\/span>u<\/span>|<\/span> JsValue<\/span>::<\/span>from_f64<\/span>(<\/span>u<\/span>.index<\/span>()<\/span> as<\/span> f64<\/span>))<\/span>\r\n            .collect<\/span>::<\/span><<\/span>Array<\/span>><\/span>()<\/span>\r\n    }<\/span>\r\n\r\n    #[wasm_bindgen(js_name<\/span> =<\/span> nodeCount)]<\/span>\r\n    pub<\/span> fn<\/span> node_count<\/span>(<\/span>&<\/span>self<\/span>)<\/span> -><\/span> usize<\/span> {<\/span>\r\n        self<\/span>.graph<\/span>.node_count<\/span>()<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u306a\u304a\u3001petgraph\u306e neighbors \u306f\u96a3\u63a5\u30ce\u30fc\u30c9\u306e\u30a4\u30c6\u30ec\u30fc\u30bf\u3092\u8fd4\u3057\u307e\u3059\u304c\u3001WebAssembly\u306e\u30ec\u30a4\u30e4\u30fc\u3067\u306f Array \u3092\u8fd4\u3059\u3088\u3046\u306b\u3057\u307e\u3057\u305f\u3002\u3053\u308c\u306f\u3001JavaScript\u306e\u30a4\u30c6\u30ec\u30fc\u30bf\u306b\u5909\u63db\u3057\u305f\u5834\u5408\u3001\u983b\u7e41\u306bRust\u5074\u304b\u3089JavaScript\u5074\u3078\u306e\u5909\u63db\u304c\u751f\u3058\u308b\u305f\u3081\u3001Array \u306b\u5909\u63db\u3057\u3066\u8fd4\u3057\u305f\u65b9\u304c\u51e6\u7406\u901f\u5ea6\u304c\u901f\u304b\u3063\u305f\u305f\u3081\u3067\u3059\u3002\u307e\u305f\u3001Rust\u5074\u304b\u3089\u30a4\u30c6\u30ec\u30fc\u30bf\u3092\u8fd4\u3057\u305f\u5834\u5408\u306b\u3001\u624b\u52d5\u3067\u30a4\u30c6\u30ec\u30fc\u30bf\u306e\u30e1\u30e2\u30ea\u89e3\u653e\u304c\u5fc5\u8981\u3067\u4f7f\u3044\u52dd\u624b\u3082\u826f\u304f\u3042\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u3002<\/p>\n
DFS\u306eJavaScript\u306b\u3088\u308b\u5b9f\u88c5<\/h2>\n
\u96a3\u63a5\u30ea\u30b9\u30c8\u306f\u3001Rust\u3068JavaScript\u306e\u4e21\u65b9\u3067\u540c\u3058\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u3092\u6301\u3064\u305f\u3081\u3001JavaScript\u306b\u3088\u308bDFS\u306e\u5b9f\u88c5\u306f\u4e00\u3064\u306b\u307e\u3068\u3081\u3066\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5b9f\u88c5\u3057\u307e\u3057\u305f\u3002<\/p>\n
const<\/span> rec<\/span> =<\/span> (<\/span>graph<\/span>,<\/span> u<\/span>,<\/span> depth<\/span>)<\/span> =><\/span> {<\/span>\r\n  for<\/span> (<\/span>const<\/span> v<\/span> of<\/span> graph<\/span>.<\/span>neighbors<\/span>(<\/span>u<\/span>))<\/span> {<\/span>\r\n    if<\/span> (<\/span>depth<\/span>[<\/span>v<\/span>]<\/span> ===<\/span> 0<\/span>)<\/span> {<\/span>\r\n      depth<\/span>[<\/span>v<\/span>]<\/span> =<\/span> depth<\/span>[<\/span>u<\/span>]<\/span> +<\/span> 1<\/span>;<\/span>\r\n      rec<\/span>(<\/span>graph<\/span>,<\/span> v<\/span>,<\/span> depth<\/span>);<\/span>\r\n    }<\/span>\r\n  }<\/span>\r\n};<\/span>\r\n\r\nconst<\/span> dfsJs<\/span> =<\/span> (<\/span>graph<\/span>)<\/span> =><\/span> {<\/span>\r\n  const<\/span> depth<\/span> =<\/span> new<\/span> Array<\/span>(<\/span>graph<\/span>.<\/span>nodeCount<\/span>());<\/span>\r\n  depth<\/span>.<\/span>fill<\/span>(<\/span>0<\/span>);<\/span>\r\n  depth<\/span>[<\/span>0<\/span>]<\/span> =<\/span> 1<\/span>;<\/span>\r\n  return<\/span> rec<\/span>(<\/span>graph<\/span>,<\/span> 0<\/span>,<\/span> depth<\/span>);<\/span>\r\n};<\/span>\r\n<\/code><\/pre>\n
DFS\u306eRust\u306b\u3088\u308b\u5b9f\u88c5<\/h2>\n
Rust\u306b\u3088\u308bDFS\u306e\u5b9f\u88c5\u306f\u3001\u5165\u529b\u306e\u30b0\u30e9\u30d5\u304cJavaScript\u306e\u5834\u5408\u3068Rust\u306e\u5834\u5408\u3067\u305d\u308c\u305e\u308c\u5225\u306e\u95a2\u6570\u3092\u7528\u610f\u3057\u307e\u3059\u3002<\/p>\n
\u4ee5\u4e0b\u306fJavaScript\u5b9f\u88c5\u306e\u96a3\u63a5\u30ea\u30b9\u30c8\u7528\u3067\u3059\u3002<\/p>\n
fn<\/span> dfs_rec<\/span>(<\/span>graph<\/span>:<\/span> &<\/span>GraphJs<\/span>,<\/span> u<\/span>:<\/span> usize<\/span>,<\/span> depth<\/span>:<\/span> &<\/span>mut<\/span> Vec<\/span><<\/span>usize<\/span>><\/span>)<\/span> {<\/span>\r\n    for<\/span> v<\/span> in<\/span> graph<\/span>\r\n        .neighbors<\/span>(<\/span>u<\/span>)<\/span>\r\n        .into_iter<\/span>()<\/span>\r\n        .map<\/span>(|<\/span>v<\/span>|<\/span> v<\/span>.ok<\/span>()<\/span>.unwrap<\/span>()<\/span>.as_f64<\/span>()<\/span>.unwrap<\/span>()<\/span> as<\/span> usize<\/span>)<\/span>\r\n    {<\/span>\r\n        if<\/span> depth<\/span>[<\/span>v<\/span>]<\/span> ==<\/span> 0<\/span> {<\/span>\r\n            depth<\/span>[<\/span>v<\/span>]<\/span> =<\/span> depth<\/span>[<\/span>u<\/span>]<\/span> +<\/span> 1<\/span>;<\/span>\r\n            dfs_rec<\/span>(<\/span>graph<\/span>,<\/span> v<\/span>,<\/span> depth<\/span>);<\/span>\r\n        }<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n\r\nfn<\/span> dfs<\/span>(<\/span>graph<\/span>:<\/span> &<\/span>GraphJs<\/span>)<\/span> -><\/span> Vec<\/span><<\/span>usize<\/span>><\/span> {<\/span>\r\n    let<\/span> mut<\/span> depth<\/span> =<\/span> vec!<\/span>[<\/span>0<\/span>;<\/span> graph<\/span>.node_count<\/span>()];<\/span>\r\n    depth<\/span>.insert<\/span>(<\/span>0<\/span>,<\/span> 1<\/span>);<\/span>\r\n    dfs_rec<\/span>(<\/span>graph<\/span>,<\/span> 0<\/span>,<\/span> &<\/span>mut<\/span> depth<\/span>);<\/span>\r\n    depth<\/span>\r\n}<\/span>\r\n\r\n#[wasm_bindgen(js_name<\/span> =<\/span> dfsRustWithJs)]<\/span>\r\npub<\/span> fn<\/span> dfs_js<\/span>(<\/span>graph<\/span>:<\/span> GraphJs<\/span>)<\/span> -><\/span> Array<\/span> {<\/span>\r\n    dfs<\/span>(<\/span>&<\/span>graph<\/span>)<\/span>\r\n        .into_iter<\/span>()<\/span>\r\n        .map<\/span>(|<\/span>u<\/span>|<\/span> JsValue<\/span>::<\/span>from_f64<\/span>(<\/span>u<\/span> as<\/span> f64<\/span>))<\/span>\r\n        .collect<\/span>::<\/span><<\/span>Array<\/span>><\/span>()<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u7d9a\u3044\u3066\u3001\u4ee5\u4e0b\u306fRust\u5b9f\u88c5\u306e\u96a3\u63a5\u30ea\u30b9\u30c8\u7528\u3067\u3059\u3002<\/p>\n
fn<\/span> dfs_rec<\/span>(<\/span>graph<\/span>:<\/span> &<\/span>GraphType<\/span>,<\/span> u<\/span>:<\/span> NodeIndex<\/span>,<\/span> depth<\/span>:<\/span> &<\/span>mut<\/span> Vec<\/span><<\/span>usize<\/span>><\/span>)<\/span> {<\/span>\r\n    for<\/span> v<\/span> in<\/span> graph<\/span>.neighbors<\/span>(<\/span>u<\/span>)<\/span> {<\/span>\r\n        if<\/span> depth<\/span>[<\/span>v<\/span>.index<\/span>()]<\/span> ==<\/span> 0<\/span> {<\/span>\r\n            depth<\/span>[<\/span>v<\/span>.index<\/span>()]<\/span> =<\/span> depth<\/span>[<\/span>u<\/span>.index<\/span>()]<\/span> +<\/span> 1<\/span>;<\/span>\r\n            dfs_rec<\/span>(<\/span>graph<\/span>,<\/span> v<\/span>,<\/span> depth<\/span>);<\/span>\r\n        }<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n\r\nfn<\/span> dfs<\/span>(<\/span>graph<\/span>:<\/span> &<\/span>GraphType<\/span>)<\/span> -><\/span> Vec<\/span><<\/span>usize<\/span>><\/span> {<\/span>\r\n    let<\/span> mut<\/span> depth<\/span> =<\/span> vec!<\/span>[<\/span>0<\/span>;<\/span> graph<\/span>.node_count<\/span>()];<\/span>\r\n    depth<\/span>[<\/span>0<\/span>]<\/span> =<\/span> 1<\/span>;<\/span>\r\n    dfs_rec<\/span>(<\/span>graph<\/span>,<\/span> node_index<\/span>(<\/span>0<\/span>),<\/span> &<\/span>mut<\/span> depth<\/span>);<\/span>\r\n    depth<\/span>\r\n}<\/span>\r\n\r\n#[wasm_bindgen(js_name<\/span> =<\/span> dfsRustWithRust)]<\/span>\r\npub<\/span> fn<\/span> dfs_rust<\/span>(<\/span>graph<\/span>:<\/span> &<\/span>GraphRust<\/span>)<\/span> -><\/span> Array<\/span> {<\/span>\r\n    dfs<\/span>(<\/span>&<\/span>graph<\/span>.graph<\/span>)<\/span>\r\n        .into_iter<\/span>()<\/span>\r\n        .map<\/span>(|<\/span>u<\/span>|<\/span> JsValue<\/span>::<\/span>from_f64<\/span>(<\/span>u<\/span> as<\/span> f64<\/span>))<\/span>\r\n        .collect<\/span>::<\/span><<\/span>Array<\/span>><\/span>()<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
trait\u3067\u4e21\u65b9\u306e\u5b9f\u88c5\u3092\u307e\u3068\u3081\u3089\u308c\u308b\u3068\u30ab\u30c3\u30b3\u826f\u3044\u306e\u3067\u8a66\u3057\u305f\u306e\u3067\u3059\u304c\u3001neighbors \u306e\u30b7\u30b0\u30cd\u30c1\u30e3\u3092 fn neighbors<‘a>(&’a self, u: NodeIndex) -> Box + ‘a>; \u3068\u3057\u305f\u3068\u3053\u308d\u3001Box \u306e\u5f71\u97ff\u304b\u3001JavaScript\u3068Rust\u4e21\u65b9\u3067\u51e6\u7406\u901f\u5ea6\u304c\u843d\u3061\u305f\u306e\u3067\u65ad\u5ff5\u3057\u307e\u3057\u305f\u3002<\/p>\n
\u30b0\u30e9\u30d5\u751f\u6210<\/h2>\n
$n = |V|$ \u9802\u70b9\u306e\u30b0\u30e9\u30d5 $G = (V, E)$ \u306e\u5404\u9802\u70b9\u30da\u30a2\u306b\u3064\u3044\u3066\u3001$p$ \u306e\u78ba\u7387\u3067\u8fba\u3092\u751f\u6210\u3059\u308b\u30e9\u30f3\u30c0\u30e0\u30b0\u30e9\u30d5\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u3044\u308f\u3086\u308bErd\u0151s\u2013\u30e2\u30c7\u30eb\u3067\u3059\u3002<\/p>\n
\u306a\u304a\u3001DFS\u306e\u8a08\u7b97\u91cf\u306e\u30aa\u30fc\u30c0\u30fc\u306f $O(|E|)$ \u3067\u3001\u8fba\u6570 $|E|$ \u306e\u671f\u5f85\u5024\u306f $p n(n – 1) \/ 2$ \u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u5b9f\u884c\u7d50\u679c<\/h1>\n
$n$ \u3092 100 \u304b\u3089 1000 \u307e\u3067 100 \u6bce\u306b\u3001$p=0.1$ \u3068\u3057\u3066 10 \u500b\u306e\u30b0\u30e9\u30d5\u3092\u751f\u6210\u3057\u3066\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u3092\u53d6\u308a\u307e\u3057\u305f\u3002\u5b9f\u884c\u6642\u9593\u306e\u6e2c\u5b9a\u306b\u306f benchmark.js \u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u30da\u30fc\u30b8\u3067\u5b9f\u969b\u306b\u5b9f\u884c\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
\u6a2a\u8ef8\u306b\u8fba\u6570 $|E|$\u3001\u7e26\u8ef8\u306bbenchmark.js\u306b\u3088\u3063\u3066\u5f97\u3089\u308c\u305f\u5e73\u5747\u5b9f\u884c\u6642\u9593\u3092\u3068\u3063\u305f\u30b0\u30e9\u30d5\u3092\u6b21\u306b\u8868\u3057\u307e\u3059\u3002<\/p>\n
\"dfs.png\"<\/div>\n
\u5b9f\u88c5\u306e\u7a2e\u985e\u3092 \u8a00\u8a9e1-\u8a00\u8a9e2 \u306e\u5f62\u5f0f\u3067\u8868\u3057\u3066\u3044\u3066\u3001\u8a00\u8a9e1\u304c\u96a3\u63a5\u30ea\u30b9\u30c8\u306e\u5b9f\u88c5\u3001\u8a00\u8a9e2\u304cDFS\u306e\u5b9f\u88c5\u3092\u8868\u3057\u3066\u3044\u307e\u3059\u3002\u4e21\u65b9\u3068\u3082Rust\u306b\u3088\u308b\u5b9f\u88c5\u304c\u6700\u3082\u901f\u304f\u3001\u305d\u3053\u304b\u30892\u500d\u7a0b\u5ea6\u306e\u6642\u9593\u3067\u4e21\u65b9\u3068\u3082JavaScript\u306b\u3088\u308b\u5b9f\u88c5\u304c\u7d9a\u304d\u307e\u3059\u3002JavaScript\u3068Rust\u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u5834\u5408\u306f\u3001\u6700\u901f\u306e\u5834\u5408\u304b\u3089\u304a\u3088\u305d\u4e00\u6841\u9045\u304f\u306a\u308b\u7d50\u679c\u3068\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n
\u5b9f\u884c\u74b0\u5883\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n
Mac mini (2018)\r\n\u30d7\u30ed\u30bb\u30c3\u30b5\uff1a3.2 GHz 6\u30b3\u30a2 Intel Core i7\r\n\u30e1\u30e2\u30ea\uff1a16GB 2667 MHz DDR4\r\n\r\nGoogle Chrome\uff1a\u30d0\u30fc\u30b8\u30e7\u30f3: 84.0.4147.89\r\n<\/code><\/pre>\n
\u307e\u3068\u3081<\/h1>\n
\u4eca\u56de\u306e\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u306e\u7d50\u679c\u3001\u8abf\u67fb\u3057\u305f\u7bc4\u56f2\u3067\u306f\u30b0\u30e9\u30d5\u306e\u30b5\u30a4\u30ba\u306b\u3088\u3089\u305a\u3001Rust\u306b\u3088\u308b\u96a3\u63a5\u30ea\u30b9\u30c8\u306e\u5b9f\u88c5\u306e\u65b9\u304c\u30c8\u30fc\u30bf\u30eb\u306e\u8a08\u7b97\u6642\u9593\u306f\u77ed\u304f\u306a\u308b\u3053\u3068\u304c\u78ba\u8a8d\u3067\u304d\u307e\u3057\u305f\u3002\u79c1\u306e\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u3067\u306f\u3001\u5b89\u5fc3\u3057\u3066Rust\u306b\u3088\u308b\u5b9f\u88c5\u3067\u9032\u3081\u3089\u308c\u305d\u3046\u3067\u3059\u3002<\/p>\n
\u305d\u306e\u4ed6\u3001\u5f53\u305f\u308a\u524d\u306e\u3053\u3068\u3067\u3059\u304c\u3001\u8a00\u8a9e\u306e\u5883\u754c\u3092\u307e\u305f\u3044\u3060\u30c7\u30fc\u30bf\u306e\u3084\u308a\u53d6\u308a\u304c\u9ad8\u30b3\u30b9\u30c8\u3067\u3042\u308b\u3053\u3068\u304c\u78ba\u8a8d\u3067\u304d\u307e\u3057\u305f\u3002\u983b\u7e41\u306b\u5883\u754c\u3092\u307e\u305f\u3050\u5834\u5408\u306f\u3001WebAssembly\u306e\u6069\u6075\u304c\u5341\u5206\u306b\u5f97\u3089\u308c\u306a\u3044\u53ef\u80fd\u6027\u304c\u3042\u308b\u306e\u3067\u3001\u30c7\u30fc\u30bf\u306e\u53d7\u3051\u6e21\u3057\u65b9\u6cd5\u3092\u691c\u8a0e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
\u4eca\u56de\u306e\u5358\u7d14\u306a\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u3067\u306f\u3001Rust\u3068JavaScript\u306e\u6027\u80fd\u5dee\u306f2\u500d\u7a0b\u5ea6\u3068\u306a\u308a\u307e\u3057\u305f\u3002\u5358\u7d14\u306a\u30d7\u30ed\u30b0\u30e9\u30e0\u3060\u3068JavaScript\u306f \u6c17\u6301\u3061\u60aa\u3044\u3050\u3089\u3044 \u975e\u5e38\u306b\u901f\u3044\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u6570\u5343\u884c\u306b\u308f\u305f\u308b\u8907\u96d1\u306a\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u3001\u6027\u80fd\u3092\u4fdd\u3061\u306a\u304c\u3089JavaScript\u3067\u5b9f\u88c5\u3059\u308b\u306e\u306f\u5c11\u3005\u96e3\u3057\u304f\u306a\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u5c06\u6765\u7684\u306bWebAssembly\u3067SIMD\u3084Threads\u306e\u6069\u6075\u3092\u53d7\u3051\u3089\u308c\u308b\u3088\u3046\u306b\u306a\u308b\u3053\u3068\u3092\u8003\u3048\u308b\u3068\u3001\u4eca\u56de\u306e\u7d50\u679c\u3067\u5341\u5206\u306a\u30a2\u30c9\u30d0\u30f3\u30c6\u30fc\u30b8\u3092\u793a\u3059\u3053\u3068\u304c\u3067\u304d\u305f\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u306f\u3058\u3081\u306b \u524d\u3005\u304b\u3089Rust + WebAssembly\u3067\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u53ef\u8996\u5316\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f5c\u3063\u3066\u3044\u307e\u3057\u305f\u304c\u3001\u4f7f\u3044 […]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-45521","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n- Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/45521-2\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:description\" content=\"\u306f\u3058\u3081\u306b \u524d\u3005\u304b\u3089Rust + WebAssembly\u3067\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u53ef\u8996\u5316\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f5c\u3063\u3066\u3044\u307e\u3057\u305f\u304c\u3001\u4f7f\u3044 […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/45521-2\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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