{"id":45351,"date":"2023-06-17T20:24:43","date_gmt":"2023-02-10T21:24:18","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/45351-2\/"},"modified":"2024-04-30T09:21:51","modified_gmt":"2024-04-30T01:21:51","slug":"45351-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/45351-2\/","title":{"rendered":""},"content":{"rendered":"<h2>\u306f\u3058\u3081\u306b<\/h2>\n<p>rustlings \u3092\u7d42\u3048\u305f\u306e\u3067\u3001\u3068\u308a\u3042\u3048\u305a\u5c11\u3057\u5177\u4f53\u7684\u306a\u4e8b\u3092\u3057\u3066\u307f\u3088\u3046\u3068\u3001\u30b5\u30a6\u30f3\u30c9\u3092\u3084\u3063\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n<p>\u74b0\u5883\u306f\u4e0b\u8a18\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Windows 10<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">rustc 1.40.0 (stable-x86_64-pc-windows-gnu)<\/ul>\n<p>IDE \u306f CLion \u3092\u4f7f\u3063\u3066\u3044\u308b\u306e\u3067 toolchain \u306f mingw \u3092\u4f7f\u3063\u3066\u3044\u307e\u3059 (CLion \u306e Rust \u30c7\u30d0\u30c3\u30ac\u30fc\u304c\u73fe\u6642\u70b9\u3067\u306f msvc \u306b\u5bfe\u5fdc\u3057\u3066\u3044\u306a\u3044) \u3002\u3061\u306a\u307f\u306b JetBrains IDE \u3068\u3057\u3066\u306f IntelliJ IDEA \u3067\u3082 Rust \u30d7\u30e9\u30b0\u30a4\u30f3\u304c\u3042\u308b\u306e\u3067\u305d\u3061\u3089\u3067\u3082\u30b3\u30fc\u30c6\u30a3\u30f3\u30b0\u306f\u53ef\u80fd\u3067\u3059\u304c\u73fe\u6642\u70b9\u3067 IntelliJ \u3067\u306f Rust \u30c7\u30d0\u30c3\u30ac\u30fc\u304c\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<h2>\u30aa\u30fc\u30c7\u30a3\u30aa\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u5c0e\u5165\u3059\u308b<\/h2>\n<p>\u3068\u308a\u3042\u3048\u305a\u97f3\u3092\u51fa\u3057\u305f\u3044\u306e\u3067\u3001\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u5c0e\u5165\u304b\u3089\u59cb\u3081\u307e\u3059\u3002<\/p>\n<p>\u691c\u7d22\u3092\u3059\u308b\u3068 &#8220;rust-portaudio&#8221; \u304c\u3088\u3055\u305d\u3046\u306a\u306e\u3067\u3001\u3053\u308c\u3092\u4f7f\u3046\u3053\u3068\u306b\u3057\u307e\u3059\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Crate portaudio<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">rust-portaudio<\/ul>\n<p>rust-portaudio \u306f &#8220;PortAudio&#8221; \u3068\u3044\u3046\u30af\u30ed\u30b9\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u304b\u3064 OSS \u306e\u30aa\u30fc\u30c7\u30a3\u30aa\u30e9\u30a4\u30d6\u30e9\u30ea\u306e Rust \u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u3068\u308a\u3042\u3048\u305a Cargo.toml \u306b rust-portaudio \u306e Crate \u3092\u5165\u308c\u308b\u8a18\u8ff0\u3092\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nn\">[dependencies]<\/span>\r\n<span class=\"py\">portaudio<\/span> <span class=\"p\">=<\/span> <span class=\"s\">\"0.7.0\"<\/span>\r\n<\/code><\/pre>\n<p>\u3067\u9069\u5f53\u306b\u30b3\u30fc\u30c9\u66f8\u3044\u3066\u30d3\u30eb\u30c9\u3092\u3057\u3066\u307f\u308b\u3068\u30ea\u30f3\u30af\u6642\u306b\u30a8\u30e9\u30fc\u304c\u51fa\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>error: linking with `gcc` failed: exit code: 1\r\n  |\r\n  = note: \"gcc\" \"-Wl,--enable-long-section-names\" \"-fno-use-linker-plugin\" \"-Wl,--nxcompat\" \"-nostdlib\" \"-m64\" (\u7565)\r\n  = note: ld: cannot find -lportaudio\r\n<\/code><\/pre>\n<p>PortAudio \u306e\u672c\u4f53\u304c\u306a\u3044\u305f\u3081\u30ea\u30f3\u30af\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u3088\u3063\u3066 PortAudio \u672c\u4f53\u3092\u30d3\u30eb\u30c9\u3057\u307e\u3059\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">PortAudio &#8211; source<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">Download PortAudio<\/ul>\n<p>Git \u304b\u3089 checkout \u3059\u308b\u304b\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u30b5\u30a4\u30c8\u3067\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u3092\u843d\u3068\u3057\u3066\u304d\u307e\u3059\u3002 Git \u306f\u6700\u65b0 stable \u306e &#8220;pa_stable_v190600_20161030&#8221; \u30d6\u30e9\u30f3\u30c1\u3067\u3002<\/p>\n<p>\u4eca\u56de\u306f Rust toolchain \u304c mingw (x64) \u306a\u306e\u3067\u3001 PortAudio \u3082 mingw (mingw64) \u3067\u30d3\u30eb\u30c9\u3057\u307e\u3059\u3002 Makefile \u3067\u30d3\u30eb\u30c9\u3057\u307e\u3057\u305f\u3002<\/p>\n<p>\u30d3\u30eb\u30c9\u3057\u305f PortAudio \u306e\u6210\u679c\u7269\u306e\u3046\u3061\u3001 &#8220;libportaudio.dll.a&#8221; \u3092\u30ea\u30f3\u30ab\u30fc\u304b\u3089\u898b\u3048\u308b\u3088\u3046\u306b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059 (\u3053\u308c\u304c\u306a\u3044\u304b\u3089\u30a8\u30e9\u30fc\u306b\u306a\u3063\u3066\u3044\u305f) \u3002\u6700\u521d\u306f &#8220;%USERPROFILE%\\.rustup\\toolchains\\stable-x86_64-pc-windows-gnu\\lib\\rustlib\\x86_64-pc-windows-gnu\\lib&#8221; \u306b\u30b3\u30d4\u30fc\u3057\u3066\u305f\u306e\u3067\u3059\u304c\u3069\u3046\u306b\u3082\u7d0d\u5f97\u304c\u3044\u304b\u305a\u3001 cargo \u304b\u3089\u53c2\u7167\u5148\u3092\u6307\u5b9a\u3067\u304d\u308b\u65b9\u6cd5\u304c\u3042\u308b\u306f\u305a\u3001\u3068\u3044\u3046\u3053\u3068\u3067\u8abf\u3079\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Cargo\u3067\u4efb\u610f\u306e\u5171\u6709\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u30ea\u30f3\u30af\u3059\u308b\u306b\u306f<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">Build Scripts<\/ul>\n<p>build.rs \u3068\u3044\u3046\u30bd\u30fc\u30b9\u30d5\u30a1\u30a4\u30eb\u3092\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u30eb\u30fc\u30c8 (cargo.toml \u3068\u540c\u3058\u4f4d\u7f6e) \u306b\u914d\u7f6e\u3057\u3001\u6a19\u6e96\u51fa\u529b\u306b\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u66f8\u304d\u51fa\u3059\u3068\u305d\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u304c\u53cd\u6620\u3055\u308c\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">fn<\/span> <span class=\"nf\">main<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nd\">println!<\/span><span class=\"p\">(<\/span><span class=\"s\">\"cargo:rustc-link-search=native=lib\"<\/span><span class=\"p\">);<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u4e0a\u8a18\u3067\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u4e0b\u306e &#8220;lib&#8221; \u30d5\u30a9\u30eb\u30c0\u30fc\u306b &#8220;libportaudio.dll.a&#8221; \u3092\u914d\u7f6e\u3059\u308b\u3068\u30ea\u30f3\u30af\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>&#8220;libportaudio-2.dll&#8221; \u306f Rust \u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u30d3\u30eb\u30c9\u3057\u3066\u751f\u6210\u3055\u308c\u305f .exe \u3068\u540c\u3058\u4f4d\u7f6e\u306b\u30b3\u30d4\u30fc\u3057\u307e\u3059 (\u3053\u308c\u3082 build.rs \u3092\u99c6\u4f7f\u3059\u308c\u3070\u914d\u7f6e\u307e\u3067\u81ea\u52d5\u3067\u884c\u3048\u305d\u3046\u3067\u3059\u304c\u4eca\u56de\u306f\u7701\u7565) \u3002<\/p>\n<p>\u4ee5\u4e0a\u3067\u6e96\u5099\u5b8c\u4e86\u3067\u3059\u3002<\/p>\n<h2>PortAudio \u3092\u4f7f\u3063\u3066\u307f\u308b<\/h2>\n<p>\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u518d\u751f\u3092\u3059\u308b\u30aa\u30fc\u30c7\u30a3\u30aa\u30c7\u30d0\u30a4\u30b9\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u306f\u4f55\u3092\u4f7f\u3063\u3066\u3082\u5927\u4f53\u8003\u3048\u65b9\u306f\u540c\u3058\u3067<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u518d\u751f\u3059\u308b\u97f3\u58f0\u30b5\u30f3\u30d7\u30eb\u3092\u53d6\u5f97\u3059\u308b\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u3092\u8a2d\u5b9a\u3059\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u30d0\u30c3\u30d5\u30a1\u5185\u306e\u30b5\u30f3\u30d7\u30eb\u6d88\u8cbb\u72b6\u6cc1\u3092\u81ea\u5206\u3067\u76e3\u8996\u3057\u7a7a\u3044\u3066\u3044\u308b\u4e8b\u3092\u78ba\u8a8d\u3057\u305f\u3089\u57cb\u3081\u3066\u3044\u304f<\/ul>\n<p>\u306e\u3069\u3061\u3089\u304b\u306e\u30d1\u30bf\u30fc\u30f3\u3067\u3059\u3002 DirectSound \u3068 OpenAL \u304c\u5f8c\u8005\u3067\u591a\u304f\u306f\u524d\u8005\u304b\u306a\u3042\u3068\u601d\u3044\u307e\u3059\u3002 PortAudio \u306e\u524d\u8005\u306e\u30d1\u30bf\u30fc\u30f3\u3067\u3059\u3002<\/p>\n<ul class=\"post-ul\">rust-portaudio\/examples\/sine.rs<\/ul>\n<p>\u3068\u3044\u3046\u3053\u3068\u3067\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u898b\u306a\u304c\u3089\u5b9f\u88c5\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">let<\/span> <span class=\"n\">pa<\/span> <span class=\"o\">=<\/span> <span class=\"nn\">portaudio<\/span><span class=\"p\">::<\/span><span class=\"nn\">PortAudio<\/span><span class=\"p\">::<\/span><span class=\"nf\">new<\/span><span class=\"p\">()<\/span><span class=\"o\">?<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">let<\/span> <span class=\"k\">mut<\/span> <span class=\"n\">settings<\/span> <span class=\"o\">=<\/span> <span class=\"n\">pa<\/span><span class=\"nf\">.default_output_stream_settings<\/span><span class=\"p\">(<\/span><span class=\"mi\">2<\/span><span class=\"p\">,<\/span> <span class=\"mf\">48000.0<\/span><span class=\"p\">,<\/span> <span class=\"mi\">48000<\/span><span class=\"p\">)<\/span><span class=\"o\">?<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">settings<\/span><span class=\"py\">.flags<\/span> <span class=\"o\">=<\/span> <span class=\"nn\">portaudio<\/span><span class=\"p\">::<\/span><span class=\"nn\">stream_flags<\/span><span class=\"p\">::<\/span><span class=\"n\">CLIP_OFF<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<p>PortAudio \u306e\u521d\u671f\u5316\u3068\u51fa\u529b\u8a2d\u5b9a\u60c5\u5831\u3092\u6e96\u5099\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">let<\/span> <span class=\"k\">mut<\/span> <span class=\"n\">sample_number<\/span><span class=\"p\">:<\/span> <span class=\"nb\">u32<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">0<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">let<\/span> <span class=\"n\">callback<\/span> <span class=\"o\">=<\/span> <span class=\"k\">move<\/span> <span class=\"p\">|<\/span><span class=\"nn\">portaudio<\/span><span class=\"p\">::<\/span><span class=\"n\">OutputStreamCallbackArgs<\/span> <span class=\"p\">{<\/span> <span class=\"n\">buffer<\/span><span class=\"p\">,<\/span> <span class=\"n\">frames<\/span><span class=\"p\">,<\/span> <span class=\"o\">..<\/span> <span class=\"p\">}|<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"k\">mut<\/span> <span class=\"n\">i<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">0<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"k\">for<\/span> <span class=\"mi\">_<\/span> <span class=\"n\">in<\/span> <span class=\"mi\">0<\/span><span class=\"o\">..<\/span><span class=\"n\">frames<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">let<\/span> <span class=\"n\">value<\/span> <span class=\"o\">=<\/span> <span class=\"p\">(<\/span><span class=\"n\">sample_number<\/span> <span class=\"k\">as<\/span> <span class=\"nb\">f32<\/span> <span class=\"o\">*<\/span> <span class=\"mf\">440.0<\/span> <span class=\"o\">*<\/span> <span class=\"mf\">2.0<\/span> <span class=\"o\">*<\/span> <span class=\"n\">PI<\/span> <span class=\"o\">\/<\/span> <span class=\"mf\">48000.0<\/span><span class=\"p\">)<\/span><span class=\"nf\">.sin<\/span><span class=\"p\">();<\/span>\r\n        <span class=\"n\">buffer<\/span><span class=\"p\">[<\/span><span class=\"n\">i<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"n\">value<\/span><span class=\"p\">;<\/span>\r\n        <span class=\"n\">buffer<\/span><span class=\"p\">[<\/span><span class=\"n\">i<\/span> <span class=\"o\">+<\/span> <span class=\"mi\">1<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"n\">value<\/span><span class=\"p\">;<\/span>\r\n        <span class=\"n\">i<\/span> <span class=\"o\">+=<\/span> <span class=\"mi\">2<\/span><span class=\"p\">;<\/span>\r\n        <span class=\"n\">sample_number<\/span> <span class=\"o\">+=<\/span> <span class=\"mi\">1<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"nn\">portaudio<\/span><span class=\"p\">::<\/span><span class=\"n\">Continue<\/span>\r\n<span class=\"p\">};<\/span>\r\n<\/code><\/pre>\n<p>440Hz \u306e\u30b5\u30a4\u30f3\u6ce2\u3092\u751f\u6210\u3059\u308b\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u3067\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">let<\/span> <span class=\"k\">mut<\/span> <span class=\"n\">stream<\/span> <span class=\"o\">=<\/span> <span class=\"n\">pa<\/span><span class=\"nf\">.open_non_blocking_stream<\/span><span class=\"p\">(<\/span><span class=\"n\">settings<\/span><span class=\"p\">,<\/span> <span class=\"n\">callback<\/span><span class=\"p\">)<\/span><span class=\"o\">?<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">stream<\/span><span class=\"nf\">.start<\/span><span class=\"p\">()<\/span><span class=\"o\">?<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">pa<\/span><span class=\"nf\">.sleep<\/span><span class=\"p\">(<\/span><span class=\"mi\">3<\/span> <span class=\"o\">*<\/span> <span class=\"mi\">1_000<\/span><span class=\"p\">);<\/span>\r\n<span class=\"n\">stream<\/span><span class=\"nf\">.stop<\/span><span class=\"p\">()<\/span><span class=\"o\">?<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">stream<\/span><span class=\"nf\">.close<\/span><span class=\"p\">()<\/span><span class=\"o\">?<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<p>\u8a2d\u5b9a\u3068\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u3092\u6307\u5b9a\u3057\u3066\u51fa\u529b\u30b9\u30c8\u30ea\u30fc\u30e0\u3092\u958b\u304d\u3001\u518d\u751f\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\n<p>\u5272\u3068\u30b7\u30f3\u30d7\u30eb\u306b\u8a18\u8ff0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n<h2>\u5fdc\u7528<\/h2>\n<ul class=\"post-ul\">.NET (F#) \u3067\u30b5\u30a6\u30f3\u30c9\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0 (\u6ce2\u5f62\u3068\u97f3\u7a0b\u3068\u97f3\u91cf)<\/ul>\n<p>\u4ee5\u524d\u66f8\u3044\u305f F# \u306e\u8a18\u4e8b\u5185\u306e\u30b3\u30fc\u30c9\u3092 Rust \u306b\u79fb\u690d\u3057\u3066\u540c\u3058\u3053\u3068\u3092\u3057\u3066\u307f\u307e\u3059\u3002 Note \u69cb\u9020\u4f53\u3084 NoteName \u5217\u6319\u578b\u306e\u5b9a\u7fa9\u306a\u3069\u306f\u9577\u3044\u306e\u3067 GitHub \u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">aosoft \/ rust_play_sound<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">rust_play_sound\/src\/lib.rs<\/ul>\n<p>\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u3067\u306e\u6ce2\u5f62\u751f\u6210\u3067\u30c9\u30df\u30bd\u306e\u548c\u97f3\u306f\u4e0b\u8a18\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">let<\/span> <span class=\"n\">time<\/span> <span class=\"o\">=<\/span> <span class=\"nn\">Time<\/span><span class=\"p\">::<\/span><span class=\"nf\">samples_to_time<\/span><span class=\"p\">(<\/span><span class=\"n\">SAMPLE_RATE<\/span><span class=\"p\">,<\/span><span class=\"n\">sample_number<\/span><span class=\"p\">);<\/span>\r\n<span class=\"k\">let<\/span> <span class=\"n\">value<\/span> <span class=\"o\">=<\/span>\r\n    <span class=\"p\">(<\/span><span class=\"nn\">Note<\/span><span class=\"p\">::<\/span><span class=\"nf\">new<\/span><span class=\"p\">(<\/span><span class=\"mi\">4<\/span><span class=\"p\">,<\/span> <span class=\"nn\">NoteName<\/span><span class=\"p\">::<\/span><span class=\"n\">C<\/span><span class=\"p\">)<\/span><span class=\"nf\">.pitch<\/span><span class=\"p\">()<\/span><span class=\"nf\">.square_wave<\/span><span class=\"p\">(<\/span><span class=\"n\">time<\/span><span class=\"p\">)<\/span> <span class=\"o\">+<\/span>\r\n     <span class=\"nn\">Note<\/span><span class=\"p\">::<\/span><span class=\"nf\">new<\/span><span class=\"p\">(<\/span><span class=\"mi\">4<\/span><span class=\"p\">,<\/span> <span class=\"nn\">NoteName<\/span><span class=\"p\">::<\/span><span class=\"n\">E<\/span><span class=\"p\">)<\/span><span class=\"nf\">.pitch<\/span><span class=\"p\">()<\/span><span class=\"nf\">.square_wave<\/span><span class=\"p\">(<\/span><span class=\"n\">time<\/span><span class=\"p\">)<\/span> <span class=\"o\">+<\/span>\r\n     <span class=\"nn\">Note<\/span><span class=\"p\">::<\/span><span class=\"nf\">new<\/span><span class=\"p\">(<\/span><span class=\"mi\">4<\/span><span class=\"p\">,<\/span> <span class=\"nn\">NoteName<\/span><span class=\"p\">::<\/span><span class=\"n\">G<\/span><span class=\"p\">)<\/span><span class=\"nf\">.pitch<\/span><span class=\"p\">()<\/span><span class=\"nf\">.square_wave<\/span><span class=\"p\">(<\/span><span class=\"n\">time<\/span><span class=\"p\">))<\/span><span class=\"nf\">.volume<\/span><span class=\"p\">(<\/span><span class=\"mf\">0.3<\/span><span class=\"p\">);<\/span>\r\n<\/code><\/pre>\n<p>\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u6f14\u7b97\u5b50\u304c\u4f7f\u3048\u306a\u3044\u306e\u3067\u4e2d\u9593\u578b\u3092\u5b9a\u7fa9\u3057\u3066\u30e1\u30bd\u30c3\u30c9\u30c1\u30a7\u30fc\u30f3\u3067\u305d\u308c\u3063\u307d\u3044\u898b\u901a\u3057\u306e\u3088\u3044\u611f\u3058\u306b\u3057\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n<h2>\u304a\u308f\u308a\u306b<\/h2>\n<p>Rust \u306a\u3093\u3082\u308f\u304b\u3089\u3093\u30fb\u30fb\u30fb<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u306f\u3058\u3081\u306b rustlings \u3092\u7d42\u3048\u305f\u306e\u3067\u3001\u3068\u308a\u3042\u3048\u305a\u5c11\u3057\u5177\u4f53\u7684\u306a\u4e8b\u3092\u3057\u3066\u307f\u3088\u3046\u3068\u3001\u30b5\u30a6\u30f3\u30c9\u3092\u3084\u3063\u3066\u307f\u307e\u3057\u305f\u3002 [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-45351","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>- Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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