Reduce Nesting

Code should reduce nesting where possible by handling error cases/specialconditions first and returning early or continuing the loop. Reduce the amountof code that is nested multiple levels.

BadGood
  1. for , v := range data {
  2.   if v.F1 == 1 {
  3.     v = process(v)
  4.     if err := v.Call(); err == nil {
  5.       v.Send()
  6.     } else {
  7.       return err
  8.     }
  9.   } else {
  10.     log.Printf("Invalid v: %v", v)
  11.   }
  12. }
 
  1. for , v := range data {
  2.   if v.F1 != 1 {
  3.     log.Printf("Invalid v: %v", v)
  4.     continue
  5.   }
  6.  
  7.   v = process(v)
  8.   if err := v.Call(); err != nil {
  9.     return err
  10.   }
  11.   v.Send()
  12. }