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golang []byte <-> String <-> Int

var bytes =[...]byte{100,110}
string(bytes[0:])


string str="hello"
[]byte(str)


import "strconv"




b, err := strconv.ParseBool("true")
f, err := strconv.ParseFloat("3.1415", 64)
i, err := strconv.ParseInt("-42", 10, 64)
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go golang get disk usage free space remain info

package main import ( "fmt" "syscall" ) func main() { fmt.Println(DiskUsage("./")) } func DiskUsage(path string) uint64 { fs := syscall.Statfs_t{} err := syscall.Statfs(path, &fs) if err != nil { return 0 } return fs.Bfree * uint64(fs.Bsize) } //All space   = fs.Blocks * uint64(fs.Bsize) //Free space = fs.Bfree * uint64(fs.Bsize) //Used space= fs.All - disk.Free
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go url encoding

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go mobile setup

Preparing: 1.Install NDK 2.Install Android-Studio  &&  SDK (with env ANDROID_HOME) 3.Install Go / git Step 1: $ go get golang.org/x/mobile/cmd/gomobile $gomobile init -ndk ~/Android/Ndk Native App: 1.Android basic/main.go package main import ( "log" "golang.org/x/mobile/app" "golang.org/x/mobile/event/lifecycle" "golang.org/x/mobile/event/paint" ) func main() { app.Main(func(a app.App) { for e := range a.Events() { switch e := a.Filter(e).(type) { case lifecycle.Event: // ... case paint.Event: log.Print("Call OpenGL here.") a.Publish() } } }) } $gomobile build -target=android  basic/ $adb install basic.apk 2.iOS: $gomobile build -target=android  basic/ SDK App: hello/hello.go package hello import "fmt" func Greetings(name string) string { return fmt.Sprintf("Hello, %s!", name) } 1.Android: $ gomobile   bind   -target=android    hello/ ...
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