June 2012
Intermediate to advanced
136 pages
2h 50m
German
Content preview from Reguläre Ausdrücke kurz & gut, 2nd Edition
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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.
Regex-Operatoren
Perl stellt die fest eingebauten Regex-Operatoren qr//, m// und s/// sowie die Funktion split zur Verfügung. Jeder Operator akzeptiert ein Regex-Muster, das die String- und Variableninterpolation durchläuft und dann kompiliert wird.
Reguläre Ausdrücke werden häufig durch Slashes getrennt, aber Sie können auch jedes andere nicht alphanumerische Nicht-White-space-Zeichen verwenden. Hier einige Beispiele:
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Ein durch Slashes (/.../) getrenntes Matching benötigt kein einleitendes m:
/.../ # mit m/.../ identisch
Die Verwendung eines einfachen Anführungszeichens als Trennzeichen verhindert die Interpolation von Variablen und der Konstrukte \N{Name}, \u, \l, \U, \L, \Q, \E. Normalerweise werden ...
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