query: How to validate if a string is a regular expression?
positive_passages.docid: 21579
positive_passages.text: Can I test if a regex is valid in C# without throwing exception
negative_passages.docid: 108395
negative_passages.text: How to use regex in String.contains() method in Java
negative_passages.docid: 152580
negative_passages.text: C# Regular Expressions with \Uxxxxxxxx characters in the pattern
negative_passages.docid: 74098
negative_passages.text: In Python, is there a way to validate a user input in a certain format?
negative_passages.docid: 59599
negative_passages.text: What is a good regular expression to match a URL?
negative_passages.docid: 10320
negative_passages.text: Regular Expression to match valid dates
negative_passages.docid: 40539
negative_passages.text: How do I use regular expressions in bash scripts?
negative_passages.docid: 31612
negative_passages.text: Need regular expression for checking at least 3 uppercase, 3 lowercase, 3 digits and 3 special character
negative_passages.docid: 78395
negative_passages.text: Checking whole string with a regex
negative_passages.docid: 101140
negative_passages.text: How can I find all matches to a regular expression in Python?
negative_passages.docid: 96443
negative_passages.text: PHP regex for validating a URL
negative_passages.docid: 312
negative_passages.text: How to validate phone numbers using regex
negative_passages.docid: 43927
negative_passages.text: How to check that a string is a palindrome using regular expressions?
negative_passages.docid: 54939
negative_passages.text: Regular expression: match start or whitespace
negative_passages.docid: 134825
negative_passages.text: How do I remove letters and dashes and dollar signs in a string using a regular expression?
negative_passages.docid: 1978
negative_passages.text: What to do Regular expression pattern doesn't match anywhere in string?
negative_passages.docid: 142890
negative_passages.text: Regular expression getElementById