Generators create iterable sequences with lazy evaluation. Here's how to use them effectively.
Basic Generators
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Infinite Sequences
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Passing Values to Generators
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Generator Delegation
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Custom Iterables
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Async Generators
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Generator Utilities
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Lazy Evaluation
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Generator for State Management
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Error Handling
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Real-World Example: Pagination
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Best Practices
When to use:
✓ Large or infinite sequences
✓ Lazy evaluation needed
✓ Custom iteration logic
✓ Async data streams
Performance:
✓ Use for lazy evaluation
✓ Avoid for small fixed arrays
✓ Clean up with return()
✓ Handle errors properly
Patterns:
✓ Combine with async/await
✓ Use yield* for delegation
✓ Create reusable utilities
✓ Implement Symbol.iterator
Conclusion
Generators enable lazy evaluation and custom iteration. Use them for large datasets, infinite sequences, and async streams. Combine with utility functions like map, filter, and take for powerful data processing pipelines.