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,
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 7. URLs, Pfade und Internetadressen
Neben den Zahlen, die Thema des vorherigen Kapitels waren, sind in vielen Programmen die verschiedenen Pfade und Locators zum Finden von Daten wichtig:
URLs, URNs und entsprechende Strings
Domainnamen
IP-Adressen
Datei- und Ordnernamen in Microsoft Windows
Speziell das URL-Format hat sich als so flexibel und nützlich herausgestellt, dass es für eine ganze Reihe von Ressourcen verwendet wird, die gar nichts mit dem World Wide Web zu tun haben. Damit werden sich die regulären Ausdrücke aus diesem Kapitel in erstaunlich vielen Situationen nutzen lassen.
7.1 URLs validieren
Problem
Sie wollen prüfen, ob ein Text eine für Ihre Zwecke gültige URL enthält.
Lösung
So gut wie jede URL zulassen:
^(https?|ftp|file)://.+$ ...
Become 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,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.