April 2018
Intermediate to advanced
264 pages
8h 24m
Polish
Content preview from Nowoczesne receptury w Javie
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Rozdział 4. Komparatory i kolektory
W Javie 8 wzbogacono interfejs Comparator o kilka statycznych i domyślnych metod, które znacznie ułatwiają wykonywanie operacji sortowania. Teraz kolekcję zwykłych obiektów można posortować według jednej własności, następnie według drugiej, potem trzeciej itd. tylko za pomocą serii wywołań metod biblioteki.
Ponadto w Javie 8 dodano nową klasę pomocniczą o nazwie java.util.stream.Collectors, która udostępnia statyczne metody do konwertowania strumieni na różne typy kolekcji. Kolektory mogą być też stosowane „w dole strumienia”, to znaczy można ich używać jako etapu przetwarzania końcowego po operacjach grupowania lub partycjonowania.
Wszystkie te koncepcje zilustrowałem przedstawionymi w tym rozdziale recepturami. ...
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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.