About Regular Expressions
Regular Expression (aka “Regex”) is used to search a particular text pattern. Using Regex in a computer program, a developer defines the way to search and perform an action on a particular string. You can use ASCII characters such as digits, letters, symbols, and punctuation to look for a string. You can also use Unicode characters for matching an international text. For example, .*\.txt Redex can tell you all the text files in a program. It is highly efficient where one needs to perform activities like searching, processing, and validation of a text pattern.
Prerequisites for Learning Regular Expressions
There is no prerequisite to learning regular expressions. Basic awareness of mathematical operators and a basic familiarity with programming can act as an additional benefit.
Why Learn Regular Expressions?
Finding data or information can be a difficult task especially in today’s big data world. A Regex can help extract data from sources like log files, documents, spreadsheets, or databases. Acing Regex will save you time and effort while analyzing a large amount of data. Instead of searching multiple times, find the key text in just one search with Regex. For example, for searching ‘separate’ in a file, use s[ae]p[ae]r[ae]te Regex to discover the word along with all its misspellings. In short, a developer can use Regex for fast and smart results.
How Can Hackr.io Help You Find the Best Regular Expressions?
Hackr.io is a community recommended site to learn Regular Expressions from the best tutorials and courses. It offers tutorials that are submitted and reviewed by members of the programming community. If you are interested in regex then you can follow the Regular Expressions topic here on Hackr to get trending articles and insights on the topic. Raise your doubts in the regex forum to get help from your peers and experts.