Memory leaks in Go - Deferring function calls

for-loop-defers.go

func processManyFiles(files []string) error {
  for _, file := range files {
    f, err := os.Open(file)
    if err != nil {
      return err 
    }
    defer f.Close()
    
    process(f)
  }
  
  return nil
}

func process(f *os.File) {
  // do something with the file
}