packagemainimport"fmt"type a struct{age int name string}type data struct{obj a}func(d*data)Print(){fmt.Println(d.obj.age,d.obj.name)}funcmain(){d:=data{a{30,"hello"}}d.Print()// 30 hello} 在同一个包中的类型可以任意操作其他类型的字段,包括那些出口的和不出口的,所以在golang中私有...
1:fmt.Println # 一个打印会换行的方法 2:fmt.Print # 是一个不会换行的打印 3:fmt.Printf # 是一个格式化输出的打印 # 第一个Demo(无法换行打印) package main import "fmt" func main() { fmt.Print("123") fmt.Print("456") } # 运行 PS E:\goland\demo> go run .\main.go 123456 # 第...
// Create a new g running fn with narg bytes of arguments starting // at argp and returning nret bytes of results. callerpc is the // address of the go statement that created this. The new g is put // on the queue of g's waiting to run. // 根据函数参数和函数地址,创建一个新...
名字:= 表达式 需要注意的是,简短模式(short variable declaration)有以下限制: 定义变量,同时显式初始化。 不能提供数据类型。 只能用在函数内部。 和var 形式声明语句一样,简短变量声明语句也可以用来声明和初始化一组变量: i, j := 0, 1 下面通过一段代码来演示简短格式变量声明的基本样式。 纯文本复制 fun...
Read a file into a variable in Golang Write Write to a file in Go Append to a file Delete Delete a file in Go Delete a folder in Go Update Change the updated/modified time of a file in Go Rename Rename a file or folder Generic ...
calling// new, by taking the address of a composite literal, or by taking the// address of a local variable.// The argument finalizer must be a function that takes a single argument// to which obj's type can be assigned, and can have arbitrary ignored return// values. If either of ...
How to print the variable address in Golang?Problem Solution:In this program, we will create an integer number and assign the address of the variable to the pointer and then we will print the address of the variable using the "%p" format specifier on the console screen....
var variableName type // 定义一个名称为“variableName”,类型为"type"的变量 var vname1, vname2, vname3 type // 定义三个类型都是“type”的变量 var variableName type = value // 初始化“variableName”的变量为“value”值,类型是“type” var vname1, vname2, vname3 type= v1, v2, ...
at /usr/local/go/src/fmt/print.go:219 23 0x0000000000cf96e6 in xxx.xxx.xxx.com/xxx/xxx/xxx/log.(*ZapLog).Infof at /tmp/xxx/xx/log/zaplogger.go:274 具体报错的业务代码其实十分简单,就是单纯打印下一个变量value,初看起来没啥报错的可能,即便为nil也没啥问题。
// address of a local variable. // The argument finalizer must be a function that takes a single argument // to which obj's type can be assigned, and can have arbitrary ignored return // values. If either of these is not true, SetFinalizer may abort the ...