Defer file close
📝 Go
frank78583
· 17d ago
Use defer to automatically close a file after you finish reading or writing it, preventing resource leaks.
Go
package main import ( "io" "os"
) func main() { f, err := os.Open("example.txt") if err != nil { panic(err) } defer f.Close() data, err := io.ReadAll(f) if err != nil { panic(err) } os.Stdout.Write(data)
}
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