Regular Expressions

  1. Advanced Pattern Constructs
    1. Alternation
      1. OR Operator Syntax
        1. Alternation Scope
          1. Precedence Rules
            1. Optimization Strategies
            2. Lookaround Assertions
              1. Positive Lookahead
                1. Negative Lookahead
                  1. Positive Lookbehind
                    1. Negative Lookbehind
                      1. Zero-Width Nature
                        1. Complex Lookaround Patterns
                        2. Atomic Groups
                          1. Syntax and Purpose
                            1. Backtracking Prevention
                              1. Performance Benefits
                                1. Use Case Scenarios
                                2. Conditional Expressions
                                  1. Conditional Syntax
                                    1. Group-Based Conditions
                                      1. Lookaround-Based Conditions
                                        1. Nested Conditionals
                                        2. Comments and Documentation
                                          1. Inline Comments
                                            1. Extended Mode
                                              1. Pattern Documentation
                                                1. Maintainability Practices

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                                              5. Grouping and Capturing

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                                              7. Flags and Modifiers