Regular Expressions, also known as "RegEx" or "RegExp", are a powerful tool used for pattern matching in text. They provide a concise and flexible way to search, replace, and manipulate text.
RegEx can be used to verify if a string contains a specified pattern, extract specific information from a longer string, or replace parts of a string with a different value. They are widely used in various applications, including text editors, text processing utilities, search engines, programming languages.
Some common use cases for RegEx include:
=> Validation: RegEx can be used to validate user inputs such as email addresses, phone numbers, etc.
=> Search and Replace: RegEx can be used to search for specific patterns within a string and replace them with a different value.
=> Data Extraction: RegEx can be used to extract information from large text files, such as log files, to extract important data.
=> String Manipulation: RegEx can be used to manipulate strings, such as splitting them into substrings or removing specific characters..