December 2009
Intermediate to advanced
560 pages
15h 5m
German
Content preview from Reguläre Ausdrücke KochbuchBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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5.7 Wörter finden, die nahe beieinanderstehen
Problem
Sie wollen eine NEAR-Suche durch einen regulären Ausdruck emulieren. Wenn Sie diesen Begriff nicht kennen, sei Ihnen gesagt, dass es Suchtools gibt, die Boolesche Operatoren wie NOT und OR verwenden, aber auch einen speziellen Operator NEAR besitzen. Sucht man nach „wort1 NEAR wort2“, findet man wort1 und wort2 in beliebiger Reihenfolge, solange sie voneinander nur einen bestimmten maximalen Abstand haben.
Lösung
Wenn Sie nur nach zwei unterschiedlichen Wörtern suchen, können Sie zwei verschiedene reguläre Ausdrücke kombinieren – einen, der wort1 vor wort2 findet, und einen weiteren, der die Wörter genau umgekehrt findet. Die folgende Regex ermöglicht bis zu fünf Wörter Abstand zwischen den beiden ...
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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.