도움말 문서 보여줌
| Welcome to an overview of the documentation provided by the Rust project. This page contains links to various helpful references, most of which are available offline (if opened with rustup doc). |
| rust 실행파일 (0) | 2023.05.11 |
|---|---|
| rust if문 (0) | 2023.05.11 |
| rust cargo new를 통한 프로젝트 생성 (0) | 2023.05.09 |
| rust 와 main.rs (0) | 2023.05.09 |
| rust 문서 다운로드하기(cargo) (0) | 2023.05.09 |
msvc 설치하고 하니 정상적으로 잘 빌드 된다.
| C:\Users\user\Desktop\study\rust\hello_cargo>cargo build Compiling hello_cargo v0.1.0 (C:\Users\free\Desktop\study\rust\hello_cargo) Finished dev [unoptimized + debuginfo] target(s) in 1.04s |
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에라이.. 역시 윈도우는 취미/개발용이 아니라 엔터테인먼트 용이었나!? (뜬금없이 분노중)
| C:\Users\user\Desktop\study\rust>cargo new hello_cargo Created binary (application) `hello_cargo` package C:\Users\user\Desktop\study\rust\hello_cargo> cd hello_cargo C:\Users\user\Desktop\study\rust\hello_cargo>cargo build Compiling hello_cargo v0.1.0 (C:\Users\free\Desktop\study\rust\hello_cargo) error: linker `link.exe` not found | = note: program not found note: the msvc targets depend on the msvc linker but `link.exe` was not found note: please ensure that Visual Studio 2017 or later, or Build Tools for Visual Studio were installed with the Visual C++ option. note: VS Code is a different product, and is not sufficient. error: could not compile `hello_cargo` due to previous error |
[링크 : https://doc.rust-lang.org/book/ch01-03-hello-cargo.html]
cargo.toml 내용은 평범한(?) ini 스타일이네
| [package] name = "hello_cargo" version = "0.1.0" edition = "2021" # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html [dependencies] |
.gitignore 파일은 /target 인걸 봐서는 /src 에는 소스 /target에는 바이너리가 생성되는 구조인듯
| /target |
| rust if문 (0) | 2023.05.11 |
|---|---|
| rust rustup doc (0) | 2023.05.10 |
| rust 와 main.rs (0) | 2023.05.09 |
| rust 문서 다운로드하기(cargo) (0) | 2023.05.09 |
| rust in windows (0) | 2023.05.09 |
러스트니까 확장자가 rs인가..
함수는 fn 키워드로 구분하는 듯.
| C:\Users\user\Desktop\study\rust>type main.rs fn main() { println!("Hello, world!"); } |
처음해보려는데 머가 잘 못 깔린걸까.. -_-
| C:\Users\user\Desktop\study\rust>rustc main.rs error: linker `link.exe` not found | = note: program not found note: the msvc targets depend on the msvc linker but `link.exe` was not found note: please ensure that Visual Studio 2017 or later, or Build Tools for Visual Studio were installed with the Visual C++ option. note: VS Code is a different product, and is not sufficient. error: aborting due to previous error |
먼가 열심히 object 파일은 생성하는데 linker가 없어서 실행파일을 만드는건 실패한 듯.
| C:\Users\user\Desktop\study\rust>dir C 드라이브의 볼륨에는 이름이 없습니다. 볼륨 일련 번호: 38F7-6D98 C:\Users\user\Desktop\study\rust 디렉터리 2023-05-09 오후 01:18 <DIR> . 2023-05-09 오후 01:18 <DIR> .. 2023-05-09 오후 01:18 1,224 main.398lq81sg45tyvtc.rcgu.o 2023-05-09 오후 01:18 508 main.main.b8591b61-cgu.0.rcgu.o 2023-05-09 오후 01:18 1,870 main.main.b8591b61-cgu.1.rcgu.o 2023-05-09 오후 01:18 1,651 main.main.b8591b61-cgu.2.rcgu.o 2023-05-09 오후 01:18 802 main.main.b8591b61-cgu.3.rcgu.o 2023-05-09 오후 01:18 2,396 main.main.b8591b61-cgu.4.rcgu.o 2023-05-09 오후 01:18 1,708 main.main.b8591b61-cgu.5.rcgu.o 2023-05-09 오후 01:18 46 main.rs 8개 파일 10,205 바이트 2개 디렉터리 127,890,599,936 바이트 남음 |
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msvc 설치하고 나서 rustc 해서 빌드하니 아래와 같이 익숙한(!) pdb와 exe가 나온다.
| C:\Users\user\Desktop\study\rust>rustc main.rs C:\Users\user\Desktop\study\rust>dir C 드라이브의 볼륨에는 이름이 없습니다. 볼륨 일련 번호: 38F7-6D98 C:\Users\user\Desktop\study\rust 디렉터리 2023-05-09 오후 11:37 <DIR> . 2023-05-09 오후 11:37 <DIR> .. 2023-05-09 오후 01:29 <DIR> hello_cargo 2023-05-09 오후 11:37 163,840 main.exe 2023-05-09 오후 11:37 1,355,776 main.pdb 2023-05-09 오후 01:18 46 main.rs 2023-05-09 오후 01:34 16,904,109 The Rust Programming Language.pdf 4개 파일 18,423,771 바이트 3개 디렉터리 121,282,232,320 바이트 남음 |
| rust if문 (0) | 2023.05.11 |
|---|---|
| rust rustup doc (0) | 2023.05.10 |
| rust cargo new를 통한 프로젝트 생성 (0) | 2023.05.09 |
| rust 문서 다운로드하기(cargo) (0) | 2023.05.09 |
| rust in windows (0) | 2023.05.09 |
설치할때 msvc가 안깔려서 그런가 무슨 link 없다고 배짼다.
인터넷이 되는 천국에 가면 다시 해봐야겠네
| The HTML format is available online at https://doc.rust-lang.org/stable/book/ and offline with installations of Rust made with rustup; run rustup docs --book to open. |
[링크 : https://doc.rust-lang.org/book/]
| Requirements Building the book requires mdBook, ideally the same version that rust-lang/rust uses in this file. To get it: $ cargo install mdbook --version <version_num> Building To build the book, type: $ mdbook build |
[링크 : https://github.com/rust-lang/book]
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msvc 깔고 재시도
| C:\Users\user\Desktop\study\rust\hello_cargo\target\debug>cargo install mdbook Updating crates.io index Installing mdbook v0.4.28 Compiling proc-macro2 v1.0.56 Compiling quote v1.0.27 Compiling unicode-ident v1.0.8 Compiling cfg-if v1.0.0 Compiling autocfg v1.1.0 Compiling windows_x86_64_msvc v0.48.0 Compiling windows_x86_64_msvc v0.42.2 Compiling windows-targets v0.48.0 Compiling version_check v0.9.4 Compiling windows-sys v0.48.0 Compiling winapi v0.3.9 Compiling syn v2.0.15 Compiling log v0.4.17 Compiling windows-targets v0.42.2 Compiling windows-sys v0.45.0 Compiling itoa v1.0.6 Compiling serde_derive v1.0.162 Compiling thiserror v1.0.40 Compiling once_cell v1.17.1 Compiling serde v1.0.162 Compiling bytes v1.4.0 Compiling getrandom v0.2.9 Compiling typenum v1.16.0 Compiling rand_core v0.6.4 Compiling generic-array v0.14.7 Compiling ppv-lite86 v0.2.17 Compiling pin-project-lite v0.2.9 Compiling futures-core v0.3.28 Compiling rand_chacha v0.3.1 Compiling unicase v2.6.0 Compiling fnv v1.0.7 Compiling thiserror-impl v1.0.40 Compiling siphasher v0.3.10 Compiling syn v1.0.109 Compiling phf_shared v0.10.0 Compiling rand v0.8.5 Compiling http v0.2.9 Compiling tokio v1.28.0 Compiling tinyvec_macros v0.1.1 Compiling io-lifetimes v1.0.10 Compiling bitflags v1.3.2 Compiling tinyvec v1.6.0 Compiling phf_generator v0.10.0 Compiling tokio-macros v2.1.0 Compiling socket2 v0.4.9 Compiling mio v0.8.6 Compiling lock_api v0.4.9 Compiling slab v0.4.8 Compiling futures-sink v0.3.28 Compiling memchr v2.5.0 Compiling parking_lot_core v0.9.7 Compiling percent-encoding v2.2.0 Compiling num_cpus v1.15.0 Compiling utf-8 v0.7.6 Compiling futures-task v0.3.28 Compiling form_urlencoded v1.1.0 Compiling unicode-normalization v0.1.22 Compiling crypto-common v0.1.6 Compiling block-buffer v0.10.4 Compiling winapi-util v0.1.5 Compiling scopeguard v1.1.0 Compiling new_debug_unreachable v1.0.4 Compiling httparse v1.8.0 Compiling futures-util v0.3.28 Compiling smallvec v1.10.0 Compiling unicode-bidi v0.3.13 Compiling idna v0.3.0 Compiling digest v0.10.6 Compiling is-terminal v0.4.7 Compiling phf_codegen v0.10.0 Compiling string_cache_codegen v0.5.2 Compiling futures-macro v0.3.28 Compiling tracing-core v0.1.30 Compiling indexmap v1.9.3 Compiling crossbeam-utils v0.8.15 Compiling cpufeatures v0.2.7 Compiling mac v0.1.1 Compiling pin-utils v0.1.0 Compiling anstyle v1.0.0 Compiling ucd-trie v0.1.5 Compiling ryu v1.0.13 Compiling serde_json v1.0.96 Compiling utf8parse v0.2.1 Compiling anstyle-parse v0.2.0 Compiling pest v2.6.0 Compiling anstyle-wincon v1.0.1 Compiling futf v0.1.5 Compiling sha1 v0.10.5 Compiling tracing v0.1.37 Compiling markup5ever v0.11.0 Compiling parking_lot v0.12.1 Compiling url v2.3.1 Compiling anstyle-query v1.0.0 Compiling num-traits v0.2.15 Compiling base64 v0.13.1 Compiling futures-channel v0.3.28 Compiling hashbrown v0.12.3 Compiling colorchoice v1.0.0 Compiling libc v0.2.144 Compiling precomputed-hash v0.1.1 Compiling string_cache v0.8.7 Compiling anstream v0.3.2 Compiling pest_meta v2.6.0 Compiling mime_guess v2.0.4 Compiling tokio-util v0.7.8 Compiling tendril v0.4.3 Compiling aho-corasick v1.0.1 Compiling phf v0.10.1 Compiling html5ever v0.26.0 Compiling same-file v1.0.6 Compiling terminal_size v0.2.6 Compiling num-integer v0.1.45 Compiling clap_lex v0.4.1 Compiling regex-syntax v0.7.1 Compiling mime v0.3.17 Compiling strsim v0.10.0 Compiling httpdate v1.0.2 Compiling try-lock v0.2.4 Compiling byteorder v1.4.3 Compiling want v0.3.0 Compiling tungstenite v0.18.0 Compiling regex v1.8.1 Compiling clap_builder v4.2.7 Compiling walkdir v2.3.3 Compiling crossbeam-channel v0.5.8 Compiling h2 v0.3.18 Compiling pest_generator v2.6.0 Compiling pin-project-internal v1.0.12 Compiling headers-core v0.2.0 Compiling http-body v0.4.5 Compiling filetime v0.2.21 Compiling windows-sys v0.42.0 Compiling anyhow v1.0.71 Compiling tower-service v0.3.2 Compiling base64 v0.21.0 Compiling pulldown-cmark v0.9.2 Compiling notify v5.1.0 Compiling rustls-pemfile v1.0.2 Compiling hyper v0.14.26 Compiling headers v0.3.8 Compiling pin-project v1.0.12 Compiling pest_derive v2.6.0 Compiling clap v4.2.7 Compiling tokio-tungstenite v0.18.0 Compiling serde_urlencoded v0.7.1 Compiling tokio-stream v0.1.14 Compiling termcolor v1.2.0 Compiling fastrand v1.9.0 Compiling maplit v1.0.2 Compiling humantime v2.1.0 Compiling scoped-tls v1.0.1 Compiling glob v0.3.1 Compiling warp v0.3.5 Compiling env_logger v0.10.0 Compiling gitignore v1.0.8 Compiling tempfile v3.5.0 Compiling ammonia v3.3.0 Compiling clap_complete v4.2.1 Compiling handlebars v4.3.6 Compiling chrono v0.4.24 Compiling notify-debouncer-mini v0.2.1 Compiling elasticlunr-rs v3.0.2 Compiling toml v0.5.11 Compiling opener v0.5.2 Compiling shlex v1.1.0 Compiling topological-sort v0.2.2 Compiling mdbook v0.4.28 Finished release [optimized] target(s) in 5m 26s Installing C:\Users\user\.cargo\bin\mdbook.exe Installed package `mdbook v0.4.28` (executable `mdbook.exe`) |
| rust if문 (0) | 2023.05.11 |
|---|---|
| rust rustup doc (0) | 2023.05.10 |
| rust cargo new를 통한 프로젝트 생성 (0) | 2023.05.09 |
| rust 와 main.rs (0) | 2023.05.09 |
| rust in windows (0) | 2023.05.09 |
테터링 걸어서 하려니 1번 선택하니 데이터 용량의 압박으로 3번 으로 진행
다운로드 크기 1.37GB...?!
3번으로 하면 아래와 같은 메시지가 나오면서 진행된다.
다운로드 용량은 좀 줄어, 그나마 테터링으로 비빌용량(100MB)이 나온다.
Rust Visual C++ prerequisites Rust requires a linker and Windows API libraries but they don't seem to be available. These components can be acquired through a Visual Studio installer. 1) Quick install via the Visual Studio Community installer (free for individuals, academic uses, and open source). 2) Manually install the prerequisites (for enterprise and advanced users). 3) Don't install the prerequisites (if you're targeting the GNU ABI). >3 Welcome to Rust! This will download and install the official compiler for the Rust programming language, and its package manager, Cargo. Rustup metadata and toolchains will be installed into the Rustup home directory, located at: C:\Users\free\.rustup This can be modified with the RUSTUP_HOME environment variable. The Cargo home directory is located at: C:\Users\free\.cargo This can be modified with the CARGO_HOME environment variable. The cargo, rustc, rustup and other commands will be added to Cargo's bin directory, located at: C:\Users\free\.cargo\bin This path will then be added to your PATH environment variable by modifying the HKEY_CURRENT_USER/Environment/PATH registry key. You can uninstall at any time with rustup self uninstall and these changes will be reverted. Current installation options: default host triple: x86_64-pc-windows-msvc default toolchain: stable (default) profile: default modify PATH variable: yes 1) Proceed with installation (default) 2) Customize installation 3) Cancel installation >1 info: profile set to 'default' info: default host triple is x86_64-pc-windows-msvc info: syncing channel updates for 'stable-x86_64-pc-windows-msvc' info: latest update on 2023-04-20, rust version 1.69.0 (84c898d65 2023-04-16) info: downloading component 'cargo' info: downloading component 'clippy' info: downloading component 'rust-docs' 13.4 MiB / 13.4 MiB (100 %) 9.9 MiB/s in 1s ETA: 0s info: downloading component 'rust-std' 25.1 MiB / 25.1 MiB (100 %) 8.7 MiB/s in 2s ETA: 0s info: downloading component 'rustc' 58.9 MiB / 58.9 MiB (100 %) 9.4 MiB/s in 6s ETA: 0s info: downloading component 'rustfmt' info: installing component 'cargo' 4.1 MiB / 4.1 MiB (100 %) 3.4 MiB/s in 1s ETA: 0s info: installing component 'clippy' info: installing component 'rust-docs' 13.4 MiB / 13.4 MiB (100 %) 1.3 MiB/s in 20s ETA: 0s info: installing component 'rust-std' 25.1 MiB / 25.1 MiB (100 %) 4.0 MiB/s in 6s ETA: 0s info: installing component 'rustc' 58.9 MiB / 58.9 MiB (100 %) 4.5 MiB/s in 13s ETA: 0s info: installing component 'rustfmt' info: default toolchain set to 'stable-x86_64-pc-windows-msvc' stable-x86_64-pc-windows-msvc installed - rustc 1.69.0 (84c898d65 2023-04-16) Rust is installed now. Great! To get started you may need to restart your current shell. This would reload its PATH environment variable to include Cargo's bin directory (%USERPROFILE%\.cargo\bin). Press the Enter key to continue. |
근데.. 어떻게 실행하지 -ㅁ-?
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하라는대로 환경변수에 아래꺼를 추가해주고 리부팅 하면 끝
| %USERPROFILE%\.cargo\bin |
| rust if문 (0) | 2023.05.11 |
|---|---|
| rust rustup doc (0) | 2023.05.10 |
| rust cargo new를 통한 프로젝트 생성 (0) | 2023.05.09 |
| rust 와 main.rs (0) | 2023.05.09 |
| rust 문서 다운로드하기(cargo) (0) | 2023.05.09 |
e.Static은 아래와 같이 접근 경로, 디렉토리(상대경로)로 설정되며
index.html은 연결되어도 디렉토리에 대해서 리스팅을 해주지 않는데
| e := echo.New() e.Static("/static", "assets") |
e.Use에 middleware를 사용하고 Browse:true를 넣어주면
apache에서 처럼 index.html이 없는 디렉토리에서 목록을 리스팅해준다.
Root 는 static과 같이 입력하면 실행으로 부터 상대경로로, /static과 같이 입력하면 절대경로로 작동한다.
| e := echo.New() e.Use(middleware.StaticWithConfig(middleware.StaticConfig{ Root: "static", Browse: true, })) |
[링크 : https://stackoverflow.com/questions/45558773/serving-files-with-echo]
[링크 : https://echo.labstack.com/middleware/static/]
테스트 디렉토리에 아래와 같이 파일을 생성하고
| # cd test # ls -al total 32 drwxr-xr-x 2 root root 16384 May 8 10:52 . drwxr-xr-x 6 root root 16384 May 8 10:52 .. -rwxr-xr-x 1 root root 0 May 8 10:52 1.log -rwxr-xr-x 1 root root 0 May 8 10:52 2.log |
localhost/test 로 접속하면 이쁘진 않은데 아래와 같이 목록이 출력된다.
| golang mutex (sync) (0) | 2023.05.16 |
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| go 포맷터 (0) | 2023.05.11 |
| golang websocket binary (0) | 2023.03.28 |
| golang 크로스 컴파일 GOARM GOARCH (0) | 2023.02.03 |
| golang map 에 데이터 추가하기 (0) | 2023.01.13 |
내부적으로 이렇게 처리할 줄이야..
| A number literal like 37 in JavaScript code is a floating-point value, not an integer. There is no separate integer type in common everyday use. (JavaScript also has a BigInt type, but it's not designed to replace Number for everyday uses. 37 is still a number, not a BigInt.) |
[링크 : https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number]
| canvas 없는 getcontext (0) | 2023.07.12 |
|---|---|
| html canvas와 시간 그래프 흘리기 (0) | 2023.07.06 |
| websocket binarytype (0) | 2023.04.04 |
| 자바스크립트 소수점 자르기 (0) | 2023.03.13 |
| Math.min.apply() (0) | 2023.02.07 |
웹 브라우저에서 웹 소켓을 열면 기본값은 blob 으로 열리는데
| Value A string: "blob" Use Blob objects for binary data. This is the default value. "arraybuffer" Use ArrayBuffer objects for binary data. |
binaryType을 지정하면 blob이 아닌 arraybuffer로 열 수 있다.
| // Create WebSocket connection. const socket = new WebSocket("ws://localhost:8080"); // Change binary type from "blob" to "arraybuffer" socket.binaryType = "arraybuffer"; |
[링크 : https://developer.mozilla.org/en-US/docs/Web/API/WebSocket/binaryType]
웹 소켓에서 blob이나 arraybuffer로 받는데
blob은 slice를 통해 자를수 있긴 한데 이래저래 행렬 처리가 아니다 보니 번거롭고
개인적인 취향으로는 blob을 받아서 arraybuffer로 변환하기 보다는 arraybuffer로 받아서 적당히 잘라쓰는 쪽 일 듯
blob은 contentType을 멀 지정해야 하나 조금 귀찮은 듯.. (타입이다 보니 int32, float64 이런게 아닐 것 같으니)
| Syntax slice() slice(start) slice(start, end) slice(start, end, contentType) |
[링크 : https://developer.mozilla.org/en-US/docs/Web/API/Blob/slice]
| Convert an ArrayBuffer or typed array to a Blob # var array = new Uint8Array([0x04, 0x06, 0x07, 0x08]); var blob = new Blob([array]); |
[링크 : https://riptutorial.com/javascript/example/1390/converting-between-blobs-and-arraybuffers]
[링크 : https://velog.io/@chltjdrhd777/ArrayBuffer-와-Blob]
[링크 : https://heropy.blog/2019/02/28/blob/]
| strToAB = str => new Uint8Array(str.split('') .map(c => c.charCodeAt(0))).buffer; ABToStr = ab => new Uint8Array(ab).reduce((p, c) => p + String.fromCharCode(c), ''); console.log(ABToStr(strToAB('hello world!'))); |
[링크 : https://stackoverflow.com/questions/39725716/]
[링크 : https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/Int32Array]
[링크 : http://mohwa.github.io/blog/javascript/2015/08/31/binary-inJS/]
| html canvas와 시간 그래프 흘리기 (0) | 2023.07.06 |
|---|---|
| javascript 정수는 정수가 아니다 (0) | 2023.04.06 |
| 자바스크립트 소수점 자르기 (0) | 2023.03.13 |
| Math.min.apply() (0) | 2023.02.07 |
| web 렌더러 벤치마크 (0) | 2022.12.22 |
Y축 말고 X축도 되겠...지?
[링크 : https://www.chartjs.org/docs/latest/axes/cartesian/logarithmic.html]
[링크 : https://www.chartjs.org/docs/latest/samples/scales/log.html]
| Canvas2D: Multiple readback operations using getImageData (0) | 2023.07.24 |
|---|---|
| webGPU (0) | 2023.05.18 |
| chatGPT님 가라사대 Server-Sent Events (SSE) (0) | 2023.03.15 |
| JWT 로그인 예제 (0) | 2022.08.24 |
| quirks mode (0) | 2022.08.08 |
웹소켓을 통해 데이터를 JSON으로 변환해서 보내니 웹서버에 부하가 걸리는 것 같아서
binary 데이터 그대로~ 보내고 웹에서 binary를 처리하도록 하려고 찾아보는 중
서버 사이드(golang)
| for { messageType, p, err := conn.ReadMessage() if err != nil { log.Println(err) return } if err := conn.WriteMessage(messageType, p); err != nil { log.Println(err) return } } In above snippet of code, p is a []byte and messageType is an int with value websocket.BinaryMessage or websocket.TextMessage. |
[링크 : https://pkg.go.dev/github.com/gorilla/websocket#section-readme]
[링크 : https://kiwitrip.tistory.com/5]
클라이언트 사이드(웹 브라우저)
| webSocket.onmessage = function (message) { var blob = message.data; var fileReader = new FileReader(); fileReader.onload = function (event) { var arrayBuffer = event.target.result; var dataview = new DataView(arrayBuffer); var answer = dataview.getFloat64(0); alert("Server> : " + answer); }; fileReader.readAsArrayBuffer(blob); }; |
[링크 : http://www.gisdeveloper.co.kr/?p=5594]
+
23.04.04
| var wsHost = "http://my-sites-url.com/path/to/echo-web-socket-handler"; var ws = new WebSocket(wsHost); var buffer = new ArrayBuffer(5); // 5 byte buffer var bufferView = new DataView(buffer); bufferView.setFloat32(0, Math.PI); bufferView.setUint8(4, 127); ws.binaryType = 'arraybuffer'; ws.onmessage = function(message) { var view = new DataView(message.data); console.log('Uint8:', view.getUint8(4), 'Float32:', view.getFloat32(0)) }; ws.onopen = function() { ws.send(buffer); }; |
[링크 : https://riptutorial.com/javascript/example/6661/working-with-binary-messages]
| go 포맷터 (0) | 2023.05.11 |
|---|---|
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| golang 크로스 컴파일 GOARM GOARCH (0) | 2023.02.03 |
| golang map 에 데이터 추가하기 (0) | 2023.01.13 |
| golang reflect (0) | 2023.01.03 |
|
