April 2020
Intermediate to advanced
506 pages
20h 7m
Polish
Content preview from Go
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Nazywanie danych
Rozdział 7.
Gdy deklarujesz zmienną mapy, musisz podać typy
kluczy i wartości:
var myMap map[string]int
Aby utworzyć nową mapę, wywołaj funkcję make
z pożądanym typem mapy:
myMap = make(map[string]int)
Aby przypisać wartość do mapy, podaj w nawiasie
kwadratowym klucz, z jakim chcesz ją powiązać:
myMap[“mój klucz”] = 12
Aby pobrać wartość, podaj klucz:
fmt.Println(myMap[“mój klucz”])
Możesz utworzyć mapę i jednocześnie zainicjalizować
ją danymi, używając literału mapy:
map[string]int{“a”:2, “b”: 3}
Podobnie jak w tablicach i wycinkach dostęp do
klucza mapy, do którego nie przypisano wartości, ...
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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.