November 2017
Intermediate to advanced
502 pages
11h 21m
German
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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.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.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.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.
KAPITEL 17
Iteration mit purrr
Einführung
Kapitel 15 hat erörtert, wie wichtig es ist, doppelten Code zu vermeiden, indem man Funktionen erstellt, anstatt den Code per Kopieren-und-Einfügen zu wiederholen. Doppelten Code zu verringern, bringt drei Vorteile:
- Die Absicht des Codes ist besser zu erfassen, weil der Blick darauf gelenkt wird, was anders ist, und nicht darauf, was gleich bleibt.
- Auf geänderte Anforderungen können Sie leichter reagieren. Wenn sich Ihre Anforderungen ändern, müssen Sie den Code nur an einer Stelle ändern und nicht überall dort, wo Sie Code per Kopieren-und-Einfügen dupliziert haben.
- Höchstwahrscheinlich ist die Fehlerquote geringer, weil jede Codezeile an mehreren Stellen verwendet wird.
Duplizierung lässt sich unter ...
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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.