Commit f530491

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Rajeev Kumar Singh

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Go Packages and Readme

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	`1`	`+package main`
	`2`	`+`
	`3`	`+import (`
	`4`	`+ "fmt"`
	`5`	`+ "github.com/callicoder/golang-tutorials/12-packages/numbers"`
	`6`	`+ "github.com/callicoder/golang-tutorials/12-packages/strings"`
	`7`	`+ str "strings"`
	`8`	`+)`
	`9`	`+`
	`10`	`+func main() {`
	`11`	`+ fmt.Println(strings.WelcomeText)`
	`12`	`+ fmt.Println(strings.Reverse("rajeev"))`
	`13`	`+ fmt.Println(numbers.IsPrime(9))`
	`14`	`+ fmt.Println(str.Contains("Hello, World", "Wo"))`
	`15`	`+}`

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	`1`	`+package numbers`
	`2`	`+`
	`3`	`+import "math"`
	`4`	`+`
	`5`	`+// Checks if a number is prime or not`
	`6`	`+func IsPrime(num int) bool {`
	`7`	`+ for i := 2; i <= int(math.Floor(math.Sqrt(float64(num)))); i++ {`
	`8`	`+ if num%i == 0 {`
	`9`	`+ return false`
	`10`	`+ }`
	`11`	`+ }`
	`12`	`+`
	`13`	`+ return num > 1`
	`14`	`+}`

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	`1`	`+package strings`
	`2`	`+`
	`3`	`+// Reverses a string`
	`4`	`+/*`
	`5`	`+ Since strings in Go are immutable, we first convert the string to a mutable array of runes ([]rune),`
	`6`	`+ perform the reverse operation on that, and then re-cast to a string.`
	`7`	`+*/`
	`8`	`+func Reverse(s string) string {`
	`9`	`+ chars := []rune(s)`
	`10`	`+ for i, j := 0, len(chars)-1; i < j; i, j = i+1, j-1 {`
	`11`	`+ chars[i], chars[j] = chars[j], chars[i]`
	`12`	`+ }`
	`13`	`+ return string(chars)`
	`14`	`+}`

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`1`	`1`	`## Golang Tutorials`
`2`	`2`
	`3`	`+0. [Golang Installation, Setup, GOPATH, and Go Workspace](https://www.callicoder.com/golang-installation-setup-gopath-workspace/)`
	`4`	`+`
`3`	`5`	`1. [Writing your first Go program](https://www.callicoder.com/golang-introduction-hello-world/)`
`4`	`6`
`5`	`7`	`2. [Golang Variables, Zero Values, and Type inference](https://www.callicoder.com/golang-variables-zero-values-type-inference/)`

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