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1 --- | 1 --- |
2 layout: book | 2 layout: book |
3 title: "Preface" | 3 title: "Preface" |
4 subsite: "Dart Up and Running" | 4 subsite: "Dart Up and Running" |
5 description: "Read the preface of Dart: Up and Running (published by O'Reilly)." | 5 description: "Read the preface of Dart: Up and Running (published by O'Reilly)." |
6 prev-chapter: foreword.html | 6 prev-chapter: foreword.html |
7 prev-chapter-title: "Foreword" | 7 prev-chapter-title: "Foreword" |
8 next-chapter: ch01.html | 8 next-chapter: ch01.html |
9 next-chapter-title: "Quick Start" | 9 next-chapter-title: "Quick Start" |
10 --- | 10 --- |
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99 | 99 |
100 This section gives details about how the book has changed between each | 100 This section gives details about how the book has changed between each |
101 of its printings, and how the online content has changed after the most | 101 of its printings, and how the online content has changed after the most |
102 recent printing. | 102 recent printing. |
103 | 103 |
104 | 104 |
105 ### Changes after the third printing | 105 ### Changes after the third printing |
106 | 106 |
107 Added documentation for language features introduced after 1.0: | 107 Added documentation for language features introduced after 1.0: |
108 | 108 |
| 109 - Null-aware operators: |
| 110 - [??](ch02.html#conditional-expressions) |
| 111 - [??=](ch02.html#assignment-operators) |
| 112 - [?.](ch02.html#other-operators) |
109 - [Enumerated types](ch02.html#enums) | 113 - [Enumerated types](ch02.html#enums) |
110 - [Deferred loading](ch02.html#deferred-loading) | 114 - [Deferred loading](ch02.html#deferred-loading) |
111 - [Asynchrony support](ch02.html#asynchrony) | 115 - [Asynchrony support](ch02.html#asynchrony) |
112 | 116 |
113 Updated the [Keywords](ch02.html#keywords) section | 117 Updated the [Keywords](ch02.html#keywords) section |
114 to add the following words, | 118 to add the following words, |
115 which are associated with new or proposed features: | 119 which are associated with new or proposed features: |
116 | 120 |
117 - async | 121 - async |
118 - async* | 122 - async* |
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479 who manage the author workflow and make working on an O’Reilly book such | 483 who manage the author workflow and make working on an O’Reilly book such |
480 a pleasure. We personally worked with Sarah Schneider, Jessica Hosman, | 484 a pleasure. We personally worked with Sarah Schneider, Jessica Hosman, |
481 and Rachel James. | 485 and Rachel James. |
482 | 486 |
483 Finally, we thank Lars Bak and Kasper Lund for writing the foreword, and | 487 Finally, we thank Lars Bak and Kasper Lund for writing the foreword, and |
484 most of all for creating Dart. | 488 most of all for creating Dart. |
485 | 489 |
486 | 490 |
487 <hr> | 491 <hr> |
488 {% include book-nav.html %} | 492 {% include book-nav.html %} |
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