November 2012
Intermediate to advanced
888 pages
54h 46m
Polish
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17.15. Co wywołuje tę metodę? Graficzny analizator wywołań
Przypuśćmy, że tworzymy profil programu podobnego do tego, który pokazano w „17.12. Profilowanie aplikacji”, i moduł profilowania wskazuje, że źródłem problemu jest metoda Array#each. Oznacza to, że program poświęca więcej czasu na przetwarzanie tablic w pętli niż na wykonywanie innych działań:
% cumulative self self total time seconds seconds calls ms/call ms/call name 12.19 2.74 2.74 4930 0.56 0.77 Array#each
To kieruje nas we właściwą stronę, ale co dalej? W większości programów jest bardzo wiele wywołań metody Array#each. Aby można było zoptymalizować program, trzeba wiedzieć, które wiersze kodu są odpowiedzialne za większość wywołań metody Array#each. Moduł profilowania języka Ruby ...
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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.
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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.