November 2012
Intermediate to advanced
888 pages
54h 46m
Polish
Content preview from Ruby. Receptury
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22.2. Korzystanie z bibliotek języka C z poziomu kodu Ruby
Podziękowania dla Garretta Rooneya
Problem
W programie napisanym w Ruby chcemy skorzystać z biblioteki, którą zaimplementowano w języku C i która nie posiada oprawy dla języka Ruby.
Rozwiązanie
Można napisać rozszerzenie języka Ruby opakowujące bibliotekę w języku C za pomocą klas i metod języka Ruby.
Załóżmy, że chcemy stworzyć interfejs w języku Ruby do metod obsługi plików w języku C (co prawda klasa File dobrze spełnia swoją funkcję, ale zapomnijmy o tym na chwilę). Chcemy uzyskać możliwość otwarcia pliku dyskowego i czytania z niego danych bajt po bajcie.
Podobnie jak w „22.1. Pisanie rozszerzeń w języku C dla języka Ruby”, potrzebny jest plik w języku C, który implementuje ...
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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.