April 2020
Intermediate to advanced
506 pages
20h 7m
Polish
Content preview from Go
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56 Rozdział 2.
Ścieżki importowania pakietów
package main
import (
“fmt”
“math/rand”
)
func main() {
target := rand.Intn(100) + 1
fmt.Println(target)
}
Nazwy pakietów
a ścieżki importowania
W pakiecie
math/rand
znajduje się funkcja
Intn
, która pozwala generować liczby
losowe. Trzeba więc zaimportować ten pakiet,
a następnie wywołać funkcję
rand.Intn
,
aby wygenerować liczbę losową.
Chwileczkę — napisałeś, że funkcja
Intn znajduje się w pakiecie
math/rand. Dlaczego więc instrukcja
to rand.Intn, a nie math/rand.Intn?
Jeden z tych zapisów to ścieżka importowania,
a drugi to nazwa pakietu.
Zapis
math/rand
oznacza ścieżkę importowania, a nie nazwę pakietu. ...
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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.