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Advanced R:

Advanced R helps you understand how R works at a fundamental level. It is designed for R programmers who want to deepen their understanding of the language, and programmers experienced in other languages who want to understand what makes R different and special. This book will teach you the foundati...

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1. Verfasser:	Wickham, Hadley (VerfasserIn)
Format:	Buch
Sprache:	English
Veröffentlicht:	Boca Raton ; London ; New York CRC Press [2019]
Ausgabe:	Second edition
Schriftenreihe:	The R series
Schlagworte:	R > Programm
Online-Zugang:	Inhaltsverzeichnis
Zusammenfassung:	Advanced R helps you understand how R works at a fundamental level. It is designed for R programmers who want to deepen their understanding of the language, and programmers experienced in other languages who want to understand what makes R different and special. This book will teach you the foundations of R; three fundamental programming paradigms (functional, object-oriented, and metaprogramming); and powerful techniques for debugging and optimising your code.
Beschreibung:	xv, 587 Seiten Illustrationen, Diagramme
ISBN:	9780815384571 9780367255374

Internformat

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adam_text	Contents Preface 1 Introduction 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1 xiii WhyR?. Who should read this book. What you will get out ofthis book. What you will not learn. Meta-techniques . Recommended reading . Getting help . Acknowledgments . Conventions . Colophon. Foundations Introduction 2 1 1 3 4 4 5 5 6 7 10 12 13 15 Names and values 17 2.1 2.2 2.3 2.4 2.5 2.6 2.7 17 19 22 29 31 36 38 Introduction . Binding basics . Copy-on-modify . Object size . Modify-in-place . Unbinding and the garbage collector. Quiz answers. 3 Vectors 3.1 Introduction . 3.2 Atomic vectors. 3.3 Attributes . 3.4 S3 atomic vectors . 3.5 Lists. 3.6 Data frames and tibbles. 39 39 41 45 50 55 58 vii viii 4 5 6 Contents 3.7 NULL. 3.8 Quiz answers. 69 70 Subsetting 73 4.1 Introduction . 4.2 Selecting multiple elements. 4.3 Selecting a single element. 4.4 Subsetting and assignment . 4.5 Applications . 4.6 Quiz answers. 73 74 81 85 87 94 Control flow 97 5.1 Introduction . 5.2 Choices . 5.3 Loops. 5.4 Quiz answers. 97 98 102 106 Functions 107 6.1 Introduction . 6.2 Function fundamentals . 6.3 Function composition . 6.4 Lexical scoping. 6.5 Lazy evaluation . 6.6 . (dot-dot֊dot). 6.7 Exiting a function . 6.8 Function forms. 6.9 Quiz answers. 107 109 113 115 120 125 128 134 141 7 Environments 7.1 7.2 7.3 7.4 7.5 7.6 7.7 8 Introduction . Environment basics . Recursing over environments . Special environments . Call stacks . As data structures. Quiz answers. 143 143 144 153 156 165 169 170 Conditions 171 8.1 8.2 8.3 8.4 8.5 8.6 8.7 171 173 178 180 188 193 201 Introduction . Signalling conditions. Ignoring conditions . Handling conditions . Custom conditions. Applications . Quiz answers. Contents II ix Functional programming 203 Introduction 205 9 Functionals 209 9.1 9.2 9.3 9.4 9.5 9.6 9.7 209 211 221 223 233 239 242 Introduction . My first functional: map() . Purrr style . Map variants. Reduce family . Predicate functionals . Base functionals . 10 Function factories 10.1 10.2 10.3 10.4 10.5 Introduction . Factory fundamentals . Graphical factories. Statistical factories . Function factories + functionals . 11 Function operators 11.1 Introduction . 11.2 Existing function operators. 11.3 Case study: Creating your own function operators . III Object-oriented programming 247 247 249 256 261 268 271 271 272 278 283 Introduction 285 12 Base types 291 12.1 Introduction . 12.2 Base versus OO objects. 12.3 Base types . 13 S3 13.1 13.2 13.3 13.4 13.5 13.6 13.7 291 292 293 297 Introduction . Basics. Classes . Generics and methods. Object styles. Inheritance. Dispatch details . 14 R6 14.1 Introduction . 14.2 Classes and methods . 297 298 302 309 312 314 320 325 325 326 Contents x 14.3 Controlling access . 14.4 Reference semantics . 14.5 Why R6? . 15 S4 341 15.1 15.2 15.3 15.4 15.5 15.6 Introduction . Basics. Classes . Generics and methods. Method dispatch. S4 and S3. 16 Trade-offs 16.1 Introduction . 16.2 S4 versus S3 . 16.3 R6 versus S3 . IV 332 336 340 Metaprogramming 341 343 344 349 352 359 363 363 364 365 371 Introduction 373 17 Big picture 375 17.1 17.2 17.3 17.4 17.5 17.6 17.7 17.8 Introduction . Code is data . Code is a tree . Code can generate code. Evaluation runs code . Customising evaluation with functions. Customising evaluation with data . Quosures . 18 Expressions 18.1 18.2 18.3 18.4 18.5 18.6 Introduction . Abstract syntax trees . Expressions. Parsing and grammar . Walking AST with recursive functions. Specialised data structures . 19 Quasiquotation 19.1 19.2 19.3 19.4 19.5 19.6 Introduction . Motivation . Quoting. Unquoting . Non-quoting . . (dot-dot- dot). 375 376 377 378 380 381 382 383 385 385 386 391 399 404 411 415 415 416 419 424 433 436 Contents xi 19.7 Case studies . 19.8 History . 20 Evaluation 20.1 20.2 20.3 20.4 20.5 20.6 Introduction . Evaluation basics . Quosures . Data masks. Using tidy evaluation . Base evaluation . 21 Translating R code 21.1 Introduction . 21.2 HTML . 21.3 LaTeX . V Techniques 442 448 451 451 452 457 462 468 472 481 481 482 492 501 Introduction 503 22 Debugging 505 22.1 22.2 22.3 22.4 22.5 22.6 Introduction . Overall approach. Locating errors. Interactive debugger. Non-interactive debugging . Non-error failures . 23 Measuring performance 23.1 Introduction . 23.2 Profiling . 23.3 Microbenchmarking . 24 Improving performance 24.1 24.2 24.3 24.4 24.5 24.6 24.7 24.8 Introduction . Code organisation . Checking for existing solutions . Doing as little as possible. Vectorise . Avoiding copies. Case study: t-test . Other techniques. 25 Rewriting R code in C++ 25.1 Introduction . 25.2 Getting started with C++ 505 506 507 509 513 516 519 519 520 526 531 531 532 534 535 539 541 542 544 547 547 548 Contents xii 25.3 25.4 25.5 25.6 25.7 25.8 25.9 Other classes. Missing values . Standard TemplateLibrary. Case studies . Using Repp in a package . Learning more . Acknowledgments . 557 559 563 570 574 575 576 Bibliography 577 Index 581
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title	Advanced R
title_auth	Advanced R
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title_full	Advanced R Hadley Wickham
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