In Golang, log prints line numbers and other information

This is a created article in which the information may have evolved or changed.

Make a small note, by default, the log module only print the date and time, no specific line number, it is uncomfortable, hey

package main/*#include 
  
  
   
   */import "C"import "log"func main() {    log.SetFlags(log.Lshortfile | log.LstdFlags)    log.Println( C.random())}
  
  

Printing results:

2012/07/24 19:27:55 X.cgo1.go:14: 1804289383

where, log. Lshortfile can also be set to log. Llongfile is the full file path

Gets the current number of rows, file name, function name (method name):

package mainimport (       "runtime"       "fmt")func main() {        funcName, file, line, ok := runtime.Caller(0)        if ok {            fmt.Println("Func Name=" + runtime.FuncForPC(funcName).Name())            fmt.Printf("file: %s    line=%d\n", file, line)        }}