Domain-Specific Languages in R: Advanced Statistical Programming

 Table of Contents....4 About the Author....7 About the Technical Reviewer....8 Chapter 1: Introduction....9 Who This Book Is For....9 Domain-Specific Languages....10 Chapter 2: Matrix Expressions....17 Parsing Expressions....18 Meta-Programming Parsing....22 Expression Manipulation....26 Optimizing Multiplication....28 Expression Rewriting....31 Expression Evaluation....35 Chapter 3: Components of a Programming Language....38 Text, Tokens, Grammars, and Semantics....39 Specifying a Grammar....43 Designing Semantics....53 Chapter 4: Functions, Classes, and Operators....61 The S3 Object-Oriented Programming System....62 Objects and Classes....62 Generic Functions....64 Operator Overloading....69 Group Generics....74 Precedence and Evaluation Order....76 Code Blocks....79 Chapter 5: Parsing and Manipulating Expressions....82 Quoting and Evaluating....83 Exploring Expressions....89 Manipulating Expressions....99 Chapter 6: Lambda Expressions....106 Anonymous functions....106 Experiments with Alternatives to the Syntax....109 Don’t Do This at Home....112 Chapter 7: Environments and Expressions....113 Scopes and Environments....113 Default Parameters, Lazy Evaluation, and Promises....118 Quotes and Non-standard Evaluation....128 Chapter 8: Tidy Evaluation....139 Quosures....140 Quasi-quoting....151 Chapter 9: List Comprehension....162 Chapter 10: Continuous-Time Markov Chains....170 Constructing the Markov Chain....173 Constructing a Rate Matrix....177 Traces....180 Computing Likelihoods....183 Chapter 11: Pattern Matching....186 Constructors....188 Pattern Matching....199 Lists....206 Search Trees....210 Chapter 12: Dynamic Programming....217 Parsing Expressions....223 Evaluating Expressions....231 Fixing the Evaluation Environment....244 Chapter 13: Conclusion....248 References....250 Index....251