Chapter 9. The `util` package: miscellaneous utilities
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## Chapter 9. The `util` package: miscellaneous utilities

## 9.1. `GetOpt`: Command line parsing

The `GetOpt` library has been moved to the hierarchical libraries; it can be found in `System.Console.GetOpt` in the `base` package.

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8.5. `RegexString`: Regex matching made simple | Home | 9.2. `Memo`: Fast memo functions