Regular Expressions 101

Explanation
Pro

This pattern has errors, review the details below or .

? Quantifier cannot follow an opening parenthesis

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Quick Reference

26 tokens

Regular Expression


\{              # { character
    (?:         # non-capturing group
        [^{}]   # anything that is not a { or }
        |       # OR
        (?R)    # recurses the entire pattern
    )*          # previous group zero or more times
\}              # } character

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