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Coding 101 23: Perl: RegEx Search and Replace
TWiT Throwback (Video)
English - June 27, 2014 00:09 - 48 minutes - 735 MB Video - ★★★ - 2 ratingsTechnology News Tech News twit this week in tech leo laporte technology tech news tech podcasts throwback Homepage Download Apple Podcasts Google Podcasts Overcast Castro Pocket Casts RSS feed
Previous Episode: Tech News 2Night 117: Google I/O Hands-On
The Code for today's show is available at our: Github
Ivory TowerLet's talk about Regular Expressions
In the previous episode, we brushed past Regular Expressions ... OUR BAD!
Defn: At its simplest, A "Regular Expression" or "Regex" is a type of pattern-matching that can be used in searches or find and replace operations.
In a Regex, each character of the string is its own metacharacter that can be combined with other metacharacters to identify patterns and even context
Regular Expressions are used in most modern languages, and figure prominently into modern search engines. Perl is the standard-bearer for Regular Expressions in .NET, Java, Ruby and others
WHAT DOES THIS ALL MEAN?!?!?!
Quite simply... REGEX allows you to find, match and replace patters within any data set.
It lets you search NOT just complete strings, but parts of strings.
You can then replace those strings, or parts of strings with other strings. They're useful to parse files and provide a powerful search and replace tool.
Hosts: Fr. Robert Ballecer, SJ and Shannon Morse
Guest: Patrick Delahanty
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