func main() {
f.Println("mymath.Sqrt(4) =", mymath.Sqrt(4))
f.Println("E =", E) // referencia math.E
t, _ := template.New("test").Parse("Pi^2 = {{.}}")
t.Execute(os.Stdout, Pow(Pi, 2))
}
func Run() {
fmt.Printf("Hello, world. Sqrt(2) = %v\n", mymath.Sqrt(2))
s := "hello"
fmt.Printf("%s\n", s[1:3])
var arr [10]int
for i := 0; i < 10; i++ {
arr[i] = i
}
sl := arr[2:5]
fmt.Printf("%d, cap:%d\n", sl, cap(sl))
sl = append(sl, 100, 200, 300, 400, 500)
sl = append(sl, 600)
fmt.Printf("%d\n", arr)
var m map[string]int
m = make(map[string]int)
m["one"] = 1
fmt.Printf("m[one] = %d\n", m["one"])
rating := map[string]float32{"C": 5, "Go": 4.5, "Python": 4.5, "C++": 2}
csharpRating, ok := rating["C#"]
if ok {
fmt.Println("c# rating is", csharpRating)
} else {
fmt.Println("c# rating is not found")
rating["C#"] = 9.9
}
delete(rating, "C")
for k, v := range rating {
fmt.Printf("map key:%s value:%f\n", k, v)
}
ret := demo(3)
fmt.Println(ret)
add1 := 22
add2 := 33
add(add1, add2, &ret)
fmt.Println(ret)
ptr := new(Person)
ptr.name = "liucong"
ptr.age = 12
fmt.Println(ptr)
var p1 Person
p1.name, p1.age = "bad", 12
fmt.Println(p1)
p1.print()
}
func main() {
fmt.Printf("Hello, world. Sqrt(2) = %v\n", mymath.Sqrt(2))
PrintHello()
runtime.GOMAXPROCS(2)
begin := make(chan bool)
go busy(begin)
fmt.Println(runtime.NumGoroutine())
<-begin
fmt.Println("is f*****g!")
go loop_show()
var input string
fmt.Scanln(&input)
fmt.Println("done")
}
func main() {
fmt.Printf("Hello, world. Sqrt(2) = %v\n", mymath.Sqrt(2))
}
func main() {
fmt.Printf("Sqrt(2) = %v\n", mymath.Sqrt(2))
mymath.PrintComplex()
}
func main() {
fmt.Printf("Hello,Ninja.sqrt(2)= %v \n", mymath.Sqrt(2))
}
func main() {
fmt.Println("HelloWorld", mymath.Sqrt(1212))
}