April 2020
Intermediate to advanced
506 pages
20h 7m
Polish
Content preview from Go
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38 Rozdział 2.
Obsługa błędów
Rozwiązanie 2. Obsługa błędu
Sam nie wiem… Czy
ignorowanie błędu nie
jest trochę niedbałe?
To prawda. Jeśli wystąpiłby błąd, ten
program nie poinformowałby o nim!
func main() {
fmt.Print(“Podaj wynik: “)
reader := bufio.NewReader(os.Stdin)
input, _ := reader.ReadString(‘\n’)
fmt.Println(input)
}
Jeśli metoda
ReadString
zgłosi błąd, pusty identyfikator
spowoduje zignorowanie go, a program będzie kontynuował
pracę — możliwe, że z błędnymi danymi.
Po wystąpieniu błędu bardziej wskazane byłoby powiadomienie o tym użytkownika
i zatrzymanie programu.
Pakiet
log
zawiera funkcję
Fatal
, która potrafi wykonać obie te operacje w ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.