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haeun-noh/gomean-server-golang

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Go_Mean_Server

  • ํ˜„์žฌ ๊ณต๋ถ€์ค‘์ธ go ๋ฌธ๋ฒ•
func main() {
	fmt.Println("Hello World!")

	// ๋ณ€์ˆ˜ ์„ ์–ธ
	var a int = 10
	var f float32 = 11.
	var i, j, k int = 1, 2, 3
	var d = 5 // ํƒ€์ž… ์ƒ๋žต ๊ฐ€๋Šฅ (ํƒ€์ž… ์ถ”๋ก  ๊ฐ€๋Šฅ)
	fmt.Println(a)
	fmt.Println(f)
	fmt.Println(i)
	fmt.Println(j)
	fmt.Println(k)
	fmt.Println(d)

	// ์ƒ์ˆ˜ ์„ ์–ธ
	const hi = "hi"
	const (
		Sky   = "Blue"
		Rose  = "Red"
		Gyuri = "Awesome"
	)
	fmt.Println(Sky)

	// iota - identifier (์ƒ์ˆ˜๊ฐ’์„ ์ˆœ์ฐจ์ ์œผ๋กœ 0๋ถ€ํ„ฐ ๋ถ€์—ฌ ๊ฐ€๋Šฅ)
	const (
		apple = iota
		grape
		orange
	)

	// string - ``์™€ ""๋กœ๋งŒ ์„ ์–ธ ๊ฐ€๋Šฅ (''์ด๊ฑฐ ์•ˆ์“ด๋‹ค)
	// ``๋กœ ์“ฐ์ธ ๋ฌธ์ž์—ด์€ ๋ฌธ์ž ๊ทธ๋Œ€๋กœ ์‚ฌ์šฉ (`\n`์ผ ๊ฒฝ์šฐ ์ค„๋ฐ”๊ฟˆ ์•„๋‹˜)
	// string์€ ํ•œ ๋ฒˆ ์ƒ์„ฑ๋˜๋ฉด ์ˆ˜์ • ๋ถˆ๊ฐ€

	// type conversion - ํƒ€์ž… ์ž๋™ ๋ณ€ํ™˜์ด ๋˜์ง€ ์•Š๋Š”๋‹ค
	// go์—์„œ๋Š” ํƒ€์ž…์„ ๋ช…์‹œ์ ์œผ๋กœ ์ง€์ •ํ•ด์ฃผ์–ด์•ผ ํ•œ๋‹ค.
	// ๋ช…์‹œ์  ํƒ€์ž…๋ณ€ํ™˜์ด ์—†์„ ๋•Œ runtime error๊ฐ€ ๋ฐœ์ƒํ•œ๋‹ค.
	var l int = 100
	var b uint = uint(l)
	var c float32 = float32(l)
	fmt.Println(l, b, c)

	var str = "ABC"
	var bytes = []byte(str)
	var str2 = string(bytes)
	fmt.Println(str, bytes, str2)

	// ์—ฐ์‚ฐ์ž
	var p *int
	var m int = 10

	p = &m          // k์˜ ์ฃผ์†Œ ํ• ๋‹น
	fmt.Println(*p) // p๊ฐ€ ๊ฐ€๋ฆฌํ‚ค๋Š” ์ฃผ์†Œ์— ์žˆ๋Š” ๊ฐ’ ์ถœ๋ ฅ

	// if/else
	// ()์€ ์•ˆ ์“ฐ์ง€๋งŒ {}๋Š” ๋ฌด์กฐ๊ฑด ์จ ์ค€๋‹ค.
	// else if ํ˜น์€ else๋ฅผ ์“ธ ๋•Œ๋Š” ๋ฐ˜๋“œ์‹œ ์ „ ์กฐ๊ฑด์˜ {}์™€ ๊ฐ™์€ ๋ผ์ธ์— ์จ์ค€๋‹ค.
	if m == 1 {
		print("One")
	} else if m == 2 {
		print("Two")
	} else {
		print("Other")
	}
}

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๐Ÿค–2024 <๊ณ ๋ฏผ> IT show : AI ์ƒ๋‹ด์‚ฌ '๊ณฐ๊ณฐ์ด'์—๊ฒŒ ๋ฌผ์–ด๋ณด์„ธ์š”! AI ๊ณ ๋ฏผ ํ•ด๊ฒฐ ์„œ๋น„์Šค๐Ÿค–

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