The Panic,recover,defer of Golang

This is a creation in Article, where the information may have evolved or changed.

Defer,recover:

Package Mainimport ("FMT"    " Time") func test () {defer func () {//use recover to catch exceptions in defer//defer at the end of the function execution, execute the method        ifERR: = Recover (); Err! =Nil {fmt. PRINTLN (Err)}} () B:=0A:= -/FMT B. Println (a)return}func Main () { for{test () time. Sleep (time. Second)}varA []inta= Append (A,Ten, -,383) A=Append (A, a ...) Fmt. Println (a)}

Panic

Package Mainimport ("Errors"    "FMT"    " Time") func initconfig () (err error) {returnErrors. New ("Init config failed")}func Test () {//defer func () {//    //use recover to catch exceptions in defer//    //defer at the end of the function execution, execute the method//If err: = Recover (); Err! = Nil {//FMT. PRINTLN (ERR)//    }    //}()ERR: =initconfig ()ifErr! =Nil {panic (err)}return}func Main () { for{test () time. Sleep (time. Second)}varA []inta= Append (A,Ten, -,383) A=Append (A, a ...) Fmt. Println (a)}