November 2017
Intermediate to advanced
502 pages
11h 21m
German
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KAPITEL 11
Strings mit stringr
Einführung
Dieses Kapitel führt Sie in die Stringverarbeitung in R ein. Dabei lernen Sie, wie Strings funktionieren und wie Sie sie manuell erzeugen. Der Schwerpunkt dieses Kapitels liegt aber auf regulären Ausdrücken. Reguläre Ausdrücke sind nützlich, weil Strings normalerweise unstrukturierte oder halbstrukturierte Daten enthalten und reguläre Ausdrücke eine prägnante Sprache sind, um Muster in Strings zu beschreiben. Wenn Sie einen regulären Ausdruck zum ersten Mal sehen, denken Sie vielleicht, dass eine Katze quer über Ihre Tastatur gelaufen ist, doch sobald Sie das Prinzip verstanden haben, wird Ihnen der Sinn solcher Ausdrücke bald klar sein.
Voraussetzungen
Dieses Kapitel konzentriert sich auf das Paket ...
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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.