Regular Expressions

  1. Quantifiers and Repetition
    1. Basic Quantifiers
      1. Zero or More
        1. One or More
          1. Zero or One
            1. Exact Count
              1. Range Specifications
              2. Quantifier Behavior
                1. Greedy Matching
                  1. Lazy Matching
                    1. Possessive Matching
                      1. Backtracking Impact
                      2. Quantifier Combinations
                        1. Nested Quantifiers
                          1. Multiple Quantifiers
                            1. Performance Considerations
                              1. Common Pitfalls

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                            3. Basic Syntax Elements

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                            5. Grouping and Capturing