Extending the ITERATE macro – items.sjbach.com
Table of contents 1. Generators 2. Writing a new gathering clause 3. Writing a new driver Appendix: Extending the LOOP macro In a previous article I gave an overview of ITERATE but punted on showing its best feature, the ability to extend it to support new iteration constructs. These can be separated into two groups: Gatherers, like collecting or summing, for accumulating or reducing an expression
Comparing LOOP and ITERATE – items.sjbach.com
Table of contents 1. Views on LOOP 2. The purpose of ITERATE 3. Comparing looping clauses 4. Documentation 5. Obtaining ITERATE 6. Conclusion Looping is the most common non-trivial construct in imperative programming, so having a domain language for generating iteration code is unquestionably useful. I’ll explore two options within Common Lisp: LOOP is a standard macro with an expressive syntax an
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