关于golang:Go-语言变量及常量的定义与使用

变量的定义与应用

package fib_testimport (    "fmt") //引入代码依赖func TestFibList(t *testing.T) {    var a int = 1    var b int = 1    fmt.Print(a)        for i := 0; i < 5; i++ {        fmt.Print(" ", b)        tmp := a        a = b        b = tmp + a    }    fmt.Println()    t.Log("finish.")}

// 替换两个变量的值func TestFibList(t *testing.T) {    a := 1    b := 1    a, b = b, a    t.Log(a, b)}

常量的定义与应用

package constant_testimport (    "fmt") //引入代码依赖const (    Mon = iota + 1    Tue    Wed)// 位运算const (    Readable = 1 << iota    Writable    Executable)func TestConstant0(t *testing.T) {    t.Log(Mon, Tue, Wed)}func TestConstant1(t *testing.T) {    a := 1 //0001，可读    t.Log(a&Readable == Readable, a&Writable == Writable, a&Executable == Executable)        a := 7 //0111，可读可写可执行    t.Log(a&Readable == Readable, a&Writable == Writable, a&Executable == Executable)}