Go handles errors by returning them as explicit values that developers must check, avoiding the complexity and hidden control flow of exceptions.
Go handles errors by returning them as explicit values rather than using exceptions. Functions return an error as the last return value, which you must check with an if statement to decide whether to proceed or handle the failure.
file, err := os.Open("data.txt")
if err != nil {
log.Fatal(err)
}
// Use file safely here
file.Close()
Go treats errors as regular data values that functions return, similar to how a function might return a number or a string. Instead of the program crashing or jumping to a distant error handler, the code explicitly checks if an error occurred and decides what to do next. Think of it like a cashier handing you a receipt; if the receipt says 'Error,' you stop the transaction immediately instead of assuming the sale went through.