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roogh5eeSha6 id:roogh5eeSha6

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ã€Goã€‘åŸºæœ¬æ–‡æ³•â‘¢(ãƒã‚¤ãƒ³ã‚¿ãƒ»æ§‹é€ ä½“) - Qiita
ä»Šå›žã¯ãƒã‚¤ãƒ³ã‚¿ã¨æ§‹é€ ä½“ã«ç„¦ç‚¹ã‚’å½“ã¦ã¦å¦ç¿’ã—ã¾ã—ãŸã€‚ ãƒã‚¤ãƒ³ã‚¿ ãƒã‚¤ãƒ³ã‚¿ã¨ã¯ï¼Ÿ ãƒã‚¤ãƒ³ã‚¿ã¯ãƒ¡ãƒ¢ãƒªã®ã‚¢ãƒ‰ãƒ¬ã‚¹æƒ…å ±ã®ã“ã¨ã§ã™ã€‚ è©³ã—ã„èª¬æ˜Žã¯ä»¥ä¸‹ã®ãƒªãƒ³ã‚¯ãŒã¨ã¦ã‚‚å‚è€ƒã«ãªã‚Šã¾ã—ãŸã€‚ ã€å‚è€ƒã€‘ Goã§å¦ã¶ãƒã‚¤ãƒ³ã‚¿ã¨ã‚¢ãƒ‰ãƒ¬ã‚¹ Cè¨€èªžã®ãƒã‚¤ãƒ³ã‚¿ãã‚‰ã„ package main import "fmt" func main() { var var1 int = 10 var var2 *int = &var1 fmt.Println(var1) //=> 10 fmt.Println(var2) //=> 0x10414020 fmt.Println(*var2) //=> 10 }
roogh5eeSha6 2021/07/25
golang

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Goã§flagã‚’ä½¿ã£ã¦ã‚³ãƒžãƒ³ãƒ‰ãƒ©ã‚¤ãƒ³å¼•æ•°ã‚’æ‰±ã† - Qiita
å¤šåˆ†ä¸€å„„ç•ªç…Žã˜ãã‚‰ã„ã®å†…å®¹ è¨˜äº‹ã¨ã—ã¦ã®ä¾¡å€¤ã¯ã¾ã‚ç½®ã„ã¨ã„ã¦ ã›ã£ã‹ãã‚„ã£ãŸã®ã§æ•´ç†ã®ãŸã‚ã«æ›¸ãã¾ã™ å…¬å¼ãƒ‰ã‚ãƒ¥ãƒ¡ãƒ³ãƒˆ https://golang.org/pkg/flag/ éžãƒ•ãƒ©ã‚°ã®å–å¾— Parse()ã‚’å‘¼ã‚“ã å¾Œã«Args()ã§[]stringã¨ã—ã¦å–å¾—ã§ãã¾ã™ã€‚
roogh5eeSha6 2021/07/25
golang

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go buildã¨ã‚¯ãƒã‚¹ã‚³ãƒ³ãƒ‘ã‚¤ãƒ« - Qiita
Deleted articles cannot be recovered. Draft of this article would be also deleted. Are you sure you want to delete this article?
roogh5eeSha6 2021/07/25
golang

build
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Golang ã«ãŠã‘ã‚‹é…åˆ—æ“ä½œï¼ˆå®šç¾©ã€è¿½åŠ ã€å‰Šé™¤ï¼‰ â€“ Psychedelic Engineer Note
ã‚¹ãƒ©ã‚¤ã‚¹ï¼ˆsliceï¼‰ã¨ãƒžãƒƒãƒ—ï¼ˆmapï¼‰ã®ç°¡å˜ãªèª¬æ˜Ž ã‚¹ãƒ©ã‚¤ã‚¹ï¼ˆsliceï¼‰ãŒä»–ã®è¨€èªžã§ã„ã†ã¨ã“ã‚ã®ã€Œé…åˆ—ã€ã¿ãŸã„ãªã‚‚ã® ãƒžãƒƒãƒ—ï¼ˆmapï¼‰ãŒä»–ã®è¨€èªžã§ã„ã†ã¨ã“ã‚ã®ã€Œé€£æƒ³é…åˆ—ã€ã¿ãŸã„ãªã‚‚ã® ã‚¹ãƒ©ã‚¤ã‚¹ã®å®šç¾© var å¤‰æ•°å []åž‹ å¤‰æ•°å := []åž‹{} package main import "fmt" type User struct { ID int Name string } func main() { // å®šç¾©ãã®1ï¼†è¦ç´ è¿½åŠ var sample []User sample = append(sample, User{ ID: 1, Name: "test", }) // å®šç¾©ãã®2 sample2 := []User{} fmt.Print(sample) fmt.Print(sample2) } ãƒžãƒƒãƒ—ã®å®šç¾© var å¤‰æ•°å map[åž‹]åž‹ å¤‰æ•°å := map[åž‹]åž‹{}
roogh5eeSha6 2021/07/11
golang

é…åˆ—
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Goè¨€èªž(golang)ã§csvã®èªã¿æ›¸ã Reader/Writer - golangã®æ—¥è¨˜
goè¨€èªžã® encoding/csv ãƒ‘ãƒƒã‚±ãƒ¼ã‚¸ã®ä½¿ã„æ–¹ã€‚ CSVãƒ•ã‚¡ã‚¤ãƒ«ã®èªã¿æ›¸ãã¨ã€ã‚ªãƒ—ã‚·ãƒ§ãƒ³ã€ã‚¨ãƒ©ãƒ¼ãƒãƒ³ãƒ‰ãƒªãƒ³ã‚°ã«ã¤ã„ã¦æ›¸ã„ã¦ã¾ã™ã€‚ ç›®æ¬¡ ä¸€è¡Œãšã¤èªã¿è¾¼ã‚€(Read) ãƒ•ã‚¡ã‚¤ãƒ«ã‹ã‚‰èªã¿è¾¼ã‚€ csv.Readerã®ã‚ªãƒ—ã‚·ãƒ§ãƒ³ ã‚¨ãƒ©ãƒ¼ãƒãƒ³ãƒ‰ãƒªãƒ³ã‚°(csv.ParseError) èªã¿è¾¼ã‚“ã Shift-JISãƒ•ã‚¡ã‚¤ãƒ«ã‚’UTF8ã«ã™ã‚‹ ä¸€åº¦ã«ã™ã¹ã¦èªã¿è¾¼ã‚€(ReadAll) ä¸€è¡Œãšã¤æ›¸ãè¾¼ã‚€(Write) ã™ã¹ã¦ä¸€åº¦ã«æ›¸ãè¾¼ã‚€(WriteAll) CSVã‚’æ§‹é€ ä½“ã«ãƒžãƒƒãƒ”ãƒ³ã‚°ã™ã‚‹ UTF-8 BOMä»˜ãã§æ›¸ãè¾¼ã‚€ UTF-16 ã§æ›¸ãè¾¼ã‚€ Shift-JIS(ANSI) ã§æ›¸ãè¾¼ã‚€ ä¸€è¡Œãšã¤èªã¿è¾¼ã‚€(Read) package main import ( "encoding/csv" "fmt" "io" "log" "strings" ) func main() { s := `åå‰,å¹´é½¢
roogh5eeSha6 2021/07/11
golang

CSV
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Goã®åŸºæœ¬çš„ãªåž‹å¤‰æ› - Qiita
var i int = 123 var toString string toString = strconv.Itoa(i) // "123" toString = string(i) // 123ãŒrune(Unicode)ã¨ã—ã¦èªè˜ã•ã‚Œ "{" ã«ãªã‚‹ã®ã§æ³¨æ„!! var s string = "123" var s2 string = "Doraemon" var toInt int toInt, _ = strconv.Atoi(s) fmt.Println(toInt) // 123 var err error toInt, err = strconv.Atoi(s2) // panicã«ã¯ãªã‚‰ãªã„ãŒã€toIntã«ã¯ã‚¼ãƒå€¤ã€errã«ã¯ã‚¨ãƒ©ãƒ¼ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸ã‚’è¿”ã™ã€‚ fmt.Println(toInt) // 0 fmt.Println(err) // strconv.Atoi: par
roogh5eeSha6 2021/07/11
golang

åž‹å¤‰æ›
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ã€Golangã€‘ æ–‡å—åˆ—å†…ã§å¤‰æ•°ã‚’å±•é–‹ãƒ»å†…æŒ¿ã™ã‚‹æ–¹æ³•ï¼ˆGoè¨€èªžã® interpolation å„ç¨®ï¼‰ - Qiita
Goè¨€èªžã§æ–‡å—åˆ—ä¸ã«å¤‰æ•°ã‚’å±•é–‹ã—ã¦ä½¿ã„ãŸã„ Goè¨€èªžã§ä»¥ä¸‹ã¨åŒã˜ã“ã¨ã‚’ã—ãŸã„ã€‚ bash ã§ã„ã† hoge="fuga ${piyo:-piyopiyo} mogera" php Â ã§ã„ã† $hoge = "fuga ${piyo} mogera"; ruby ã§ã„ã† hoge = "fuga #{piyo} mogera" python ã§ã„ã† hoge = f'fuga {piyo} mogera' ï¼ˆpython >= 3.6 ã«é™ã‚‹ï¼‰ ã€Œgolang æ–‡å—åˆ— å¤‰æ•° å±•é–‹ã€ã¨ã‚°ã‚°ã£ã¦ã‚‚ã€Œé€£çµæ¼”ç®—åï¼ˆ+ï¼‰ã§ã—ã‹ã§ããªã„ã€ã¨ã„ã†æƒ…å ±ãŒå¤šã‹ã£ãŸã®ã§ã€è‡ªåˆ†ã®ã‚°ã‚°ãƒ©ãƒ“ãƒªãƒ†ã‚£ã¨ã—ã¦ã€‚ é–¢é€£è¨˜äº‹: æ”¹è¡Œãªã©ã‚’ã‚¨ã‚¹ã‚±ãƒ¼ãƒ—ã—ã¦è¡¨ç¤ºã—ãŸã„ã€‚ã€ä»£å…¥æ¸ˆã¿å¤‰æ•°ã®æ–‡å—åˆ—ã‚’ã‚¨ã‚¹ã‚±ãƒ¼ãƒ—å‡ºåŠ›ã€‘ @ Qiita TL; DR ç¢ºã‹ã« Go è¨€èªžï¼ˆä»¥ä¸‹ Golangï¼‰ã«ã¯ interpolationï¼ˆè£œé–“ã€å†…æŒ¿ï¼‰æ©Ÿèƒ½ã¯
roogh5eeSha6 2021/07/11
golang

æ–‡å—åˆ—
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Ginã‚’ä½¿ã£ãŸGo APIé–‹ç™ºã®åˆæ©
ä»Šæ—¥ã¯Ginã‚’ä½¿ã£ã¦ã€ç°¡å˜ãªGo APIã‚’å‹•ã‹ã™ã¨ã“ã‚ã¾ã§ã‚„ã£ã¦ã¿ãŸã„ã¨æ€ã„ã¾ã™ã€‚åˆæ©ã¨ã„ã†ã“ã¨ã§ã€ã¾ãšã¯ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã¨Quick Startã‚’å®Ÿæ–½ã—ã¾ã™ã€‚ Ginã¨ã¯ Ginã®ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ« Ginã‚’å‹•ã‹ã™ Ginã¨ã¯ Ginã¨ã¯ã€Golangã§é–‹ç™ºã•ã‚ŒãŸWebãƒ•ãƒ¬ãƒ¼ãƒ ãƒ¯ãƒ¼ã‚¯ã§ã€ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ã«å„ªã‚ŒãŸAPIæ©Ÿèƒ½ã‚’æä¾›ã—ã¾ã™ã€‚ï¼ˆGinã®GitHubã‹ã‚‰å¼•ç”¨ã—ã¦ã„ã¾ã™ã€‚ï¼‰ Gin is a web framework written in Go (Golang). It features a martini-like API with performance that is up to 40 times faster thanks to httprouter. If you need performance and good productivity, you will love Gin. å¼•
roogh5eeSha6 2021/07/07
golang

ãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«
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go mod ã®ä½¿ã„æ–¹ - Qiita
ã“ã¡ã‚‰ã®è¨˜äº‹ã¨åŒæ§˜ã®ã“ã¨ã‚’è¡Œã£ã¦ã¿ã¾ã—ãŸã€‚ GOPATH ãƒ¢ãƒ¼ãƒ‰ã‹ã‚‰ãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«å¯¾å¿œãƒ¢ãƒ¼ãƒ‰ã¸ç§»è¡Œã›ã‚ˆ go mod tidy ã‚’å®Ÿè¡Œã™ã‚‹ã®ãŒç•°ãªã‚Šã¾ã™ã€‚ ä½¿ç”¨ã—ãŸãƒãƒ¼ã‚¸ãƒ§ãƒ³
roogh5eeSha6 2021/07/07
golang

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Getting Started -- Bleve
roogh5eeSha6 2021/07/07
golang

Bleve

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Goè¨€èªžã®å¤‰æ•°å®šç¾© - Qiita
Goã®å¤‰æ•°å®šç¾©ã®æ›¸ãæ–¹ã¯ã„ãã¤ã‹ãŒã‚ã‚Šã¾ã™ã€‚ Goã®å¤‰æ•°å®šç¾©ã¯æŸ”è»Ÿæ€§ãŒã‚ã‚Šã¾ã™ã€‚ å˜ç‹¬å¤‰æ•°ã®å®šç¾© åˆæœŸå€¤ãªã—å¤‰æ•° å®šç¾©ï¼švar å¤‰æ•°å å¤‰æ•°åž‹ ä¾‹ï¼š
roogh5eeSha6 2021/07/07
golang

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Goã§ãƒ•ã‚¡ã‚¤ãƒ«ã®å˜åœ¨ç¢ºèª - Plan 9ã¨Goè¨€èªžã®ãƒ–ãƒã‚°
Goã§ãƒ•ã‚¡ã‚¤ãƒ«ã®å˜åœ¨ç¢ºèªã«ã¤ã„ã¦ã€ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆã§ã¯os.Statã®æˆ»ã‚Šå€¤ãŒã‚¨ãƒ©ãƒ¼ã‹ã©ã†ã‹ã‚’åˆ¤å®šã™ã‚‹æ–¹æ³•ãŒç´¹ä»‹ã•ã‚Œã¦ã„ã¾ã™ã‘ã‚Œã©ã€os.Statã¯ãƒ•ã‚¡ã‚¤ãƒ«ãŒå˜åœ¨ã™ã‚‹å ´åˆã§ã‚‚ã‚¨ãƒ©ãƒ¼ã‚’è¿”ã™ã“ã¨ãŒã‚ã‚‹ãŸã‚ã€ã“ã®æ–¹æ³•ã§ã¯æ£ã—ãåˆ¤å®šã§ããªã„ã‚±ãƒ¼ã‚¹ãŒå˜åœ¨ã—ã¾ã™ã€‚ã¾ãŸã€è¤‡æ•°ãƒ—ãƒã‚»ã‚¹ãŒåŒã˜ãƒ•ã‚¡ã‚¤ãƒ«ã«ã‚¢ã‚¯ã‚»ã‚¹ã™ã‚‹å ´åˆã¯ã€os.Statã®ç›´å¾Œã§ã€åˆ¥ã®ãƒ—ãƒã‚»ã‚¹ã«ã‚ˆã£ã¦ãƒ•ã‚¡ã‚¤ãƒ«ãŒä½œæˆã•ã‚ŒãŸã‚Šå‰Šé™¤ã•ã‚ŒãŸã‚Šã™ã‚‹ã‹ã‚‚ã—ã‚Œã¾ã›ã‚“ã€‚æ£ç¢ºã«å˜åœ¨ç¢ºèªã™ã‚‹å ´åˆã¯ã€å˜åœ¨ç¢ºèªã—ãŸå¾Œã«è¡Œã†å‡¦ç†ã«ã‚ˆã£ã¦ã„ãã¤ã‹ãƒ‘ã‚¿ãƒ¼ãƒ³ãŒã‚ã‚Šã¾ã™ãŒã€åŸºæœ¬ã¯ã€äº‹å‰ã«å˜åœ¨ã‚’ç¢ºèªã™ã‚‹ã®ã§ã¯ãªãã€æ„å›³ã—ãªã„å ´åˆã«ã‚¨ãƒ©ãƒ¼ã¨ãªã‚‹ã‚ˆã†ãªãƒ•ãƒ©ã‚°ã‚’ç«‹ã¦ã¦ãŠã„ã¦ã€OSã®ã‚·ã‚¹ãƒ†ãƒ ã‚³ãƒ¼ãƒ«ãŒè¿”ã—ãŸã‚¨ãƒ©ãƒ¼ã‚’åˆ¤å®šã™ã‚‹ã“ã¨ã«ãªã‚Šã¾ã™ã€‚ Cãªã©ã§ã¯ã€Unixç³»OSã¨ç•°ãªã‚Šã€Windowsã¯åˆ¥ã®é–¢æ•°ã¨ãƒ•ãƒ©ã‚°ã‚’ã€Plan 9ã¯åˆ¥ã®ãƒ•ãƒ©ã‚°ã‚’ä½¿ã„ã¾ã™ãŒã€Goæ¨™æº–ãƒ‘ãƒƒã‚±ãƒ¼ã‚¸ã®syscallã¯ãã®è¾º
roogh5eeSha6 2021/07/07
golang

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Goè¨€èªžã®ã‚¨ãƒ©ãƒ¼ãƒãƒ³ãƒ‰ãƒªãƒ³ã‚°ã«ã¤ã„ã¦ - Qiita
çš†ã•ã¾ã‚´ãƒ¼ãƒ«ãƒ‡ãƒ³ã‚¦ã‚£ãƒ¼ã‚¯ã¯ã„ã‹ãŒãŠéŽã”ã—ã§ã—ã‚‡ã†ã‹ã€‚ GWå‰ã«æŠ•ç¨¿ã—ã‚ˆã†ã¨ä¸‹æ›¸ãã«ã¡ã¾ã¡ã¾æ›¸ãæºœã‚ã¦ã„ãŸæœ¬è¨˜äº‹ã§ã™ãŒã€ã‚¹ãƒžãƒ›ã§èª¤ã£ã¦ã‚´ãƒŸç®±ãƒœã‚¿ãƒ³ã‚’æŠ¼ã—ã¦ã—ã¾ã£ãŸãŒãŸã‚ã«ä¸€çž¬ã§é›»åã®è—»å±‘ã¨åŒ–ã—ã¦ã—ã¾ã„æ³£ããªãŒã‚‰è¨˜äº‹ã‚’æ›¸ãç›´ã—ã¦ã„ã¾ã™ã€‚ ã›ã‚ã¦å‰Šé™¤æ™‚ã¯ç¢ºèªãƒ€ã‚¤ã‚¢ãƒã‚°ãã‚‰ã„å‡ºã‚‹ã‚ˆã†ã«Qiitaã«ã¯æ”¹å–„ã—ã¦ã‚‚ã‚‰ã„ãŸã„ã‚‚ã®ã§ã™ã€‚ã€‚ é–‘è©±ä¼‘é¡Œã€‚ Goè¨€èªžã§è¤‡æ•°ã‚¨ãƒ©ãƒ¼ãƒãƒ³ãƒ‰ãƒªãƒ³ã‚°ã™ã‚‹ãŸã‚ã«ã„ã„æ–¹æ³•ãªã„ã‹ãªãƒ¼ã¨ãƒãƒƒãƒˆã®æµ·ã‚’å½·å¾¨ã£ã¦ã„ãŸã¨ã“ã‚ã€ãªã‹ãªã‹ã‚ˆã•ã’ãªè¨˜äº‹ã‚’è¦‹ã¤ã‘ãŸã®ã§å®Ÿä¾‹ã‚’äº¤ãˆã¦æ›¸ãæ®‹ã—ã¦ã„ããŸã„ã¨æ€ã„ã¾ã™ã€‚ go1.6.2ã§æ¤œè¨¼ ã‚¨ãƒ©ãƒ¼å‡¦ç†ã®åŸºæœ¬ Goè¨€èªžã«ã¯tryï½žcatchï½žfinallyã®ä¾‹å¤–å‡¦ç†ã¯å˜åœ¨ã—ã¾ã›ã‚“ã€‚ http://golang.jp/go_faq#exceptions Goè¨€èªžã§ã¯ã‚¨ãƒ©ãƒ¼ã‚’å‡¦ç†ã™ã‚‹ãŸã‚ã«errorã‚¤ãƒ³ã‚¿ãƒ•ã‚§ãƒ¼ã‚¹ãŒç”¨æ„ã•ã‚Œã¦ã„ã¾ã™ã€‚ ã“ã‚Œã¯func Error(
roogh5eeSha6 2021/07/07
golang

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Goè¨€èªžã§httpã‚µãƒ¼ãƒãƒ¼ã‚’ç«‹ã¡ä¸Šã’ã¦Hello Worldã‚’ã™ã‚‹ - Qiita
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roogh5eeSha6 2021/07/04
golang

ã‚µãƒ¼ãƒãƒ¼
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roogh5eeSha6 2021/07/01
golang

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roogh5eeSha6 2021/05/30
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roogh5eeSha6 2020/11/24
golang

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roogh5eeSha6 2020/11/18
CentOS7

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roogh5eeSha6 2020/05/11
ã‚¦ã‚§ãƒ–ã‚µãƒ¼ãƒãƒ¼

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