November 2012
Intermediate to advanced
888 pages
54h 46m
Polish
Content preview from Ruby. Receptury
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Rozdział 13. Bazy danych i trwałość obiektów
Wszyscy chcą pozostawić po sobie coś trwałego i procesy języka Ruby nie są pod tym względem wyjątkiem. Każdy program, który piszemy, pozostawia jakiś ślad swojego działania (w najprostszym przypadku są to dane wyświetlane na standardowym urządzeniu wyjściowym). Większość bardziej rozbudowanych programów idzie o krok dalej: zapisują one — w pliku o określonej strukturze — dane stanowiące rezultat jednego uruchomienia, by przy następnym uruchomieniu rozpocząć działanie w stanie, w którym zakończyła się poprzednia sesja. Istnieje wiele sposobów takiego utrwalania danych, zarówno bardzo prostych, jak i wielce skomplikowanych.
Proste mechanizmy utrwalania danych, na przykład YAML, pozwalają na zapisywanie ...
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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.