Scala編程（第3版）

序 ........................................................................................................XXIV
致謝 .....................................................................................................XXVI
引言 .....................................................................................................XXIX
第1章　一門可伸縮的語言 ..........................................................................1
1.1　一門按需伸縮的語言 ..................................................................... 2
1.2　是什么讓Scala能屈能伸 ............................................................. 7
1.3　為什么要用Scala .......................................................................11
1.4　Scala尋根 ..................................................................................... 17
1.5　結語............................................................................................. 19
第2章　Scala入門 ....................................................................................20
第1步　使用Scala解釋器 ..................................................................... 21
第2步　定義變量................................................................................. 22
第3步　定義函數(shù)................................................................................. 24
第4步　編寫Scala腳本 ......................................................................... 26
第5步　用while做循環(huán)；用if做判斷 .................................................... 27
第6步　用foreach和for遍歷 ................................................................. 30
結語...................................................................................................... 32
第3章　Scala入門（續(xù)） ..........................................................................33
第7步　用類型參數(shù)化數(shù)組.................................................................. 33
第8步　使用列表 ................................................................................. 38
第9步　使用元組 ................................................................................. 42
第10步使用集和映射 ........................................................................... 43
第11步　識別函數(shù)式編程風格 ............................................................. 48
第12步　從文件讀取文本行 ................................................................ 51
結語...................................................................................................... 55
第4章　類和對象 ......................................................................................56
4.1　類、字段和方法........................................................................... 56
4.2　分號推斷...................................................................................... 61
4.3　單例對象...................................................................................... 62
4.4　Scala應用程序 ............................................................................. 65
4.5　App特質 ....................................................................................... 68
4.6　結語 ............................................................................................. 68
第5章　基礎類型和操作 ............................................................................69
5.1　一些基礎類型 .............................................................................. 69
5.2　字面量.......................................................................................... 70
5.3　字符串插值 .................................................................................. 77
5.4　操作符即方法 .............................................................................. 78
5.5　算術操作...................................................................................... 81
5.6　關系和邏輯操作........................................................................... 83
5.7　位運算操作 .................................................................................. 85
5.8　對象相等性 .................................................................................. 86
5.9　操作符優(yōu)先級和結合性 ............................................................... 88
5.10　富包裝類.................................................................................... 91
5.11　結語............................................................................................ 91
第6章　函數(shù)式對象 ...................................................................................93
6.1　Rational類的規(guī)格定義 ................................................................. 93
6.2　構建Rational ................................................................................ 94
6.3　重新實現(xiàn)toString方法 .................................................................. 96
6.4　檢查前置條件.............................................................................. 97
6.5　添加字段...................................................................................... 98
6.6　自引用.........................................................................................100
6.7　輔助構造方法 .............................................................................101
6.8　私有字段和方法..........................................................................102
6.9　定義操作符 .................................................................................104
6.10　Scala中的標識符 .......................................................................106
6.11　方法重載 ...................................................................................108
6.12　隱式轉換...................................................................................111
6.13　注意事項...................................................................................112
6.14　結語 ..........................................................................................112
第7章　內建的控制結構 .......................................................................... 114
7.1　if表達式 ......................................................................................115
7.2　while循環(huán) ....................................................................................116
7.3　for表達式 ....................................................................................119
7.4　用try表達式實現(xiàn)異常處理 ..........................................................125
7.5　match表達式 ...............................................................................129
7.6　沒有break和continue的日子 ........................................................131
7.7　變量作用域.................................................................................134
7.8　對指令式代碼進行重構 ..............................................................137
7.9　結語 ............................................................................................139
第8章　函數(shù)和閉包 .................................................................................140
8.1　方法 ............................................................................................140
8.2　局部函數(shù).....................................................................................142
8.3　一等函數(shù).....................................................................................144
8.4　函數(shù)字面量的簡寫形式 ..............................................................147
8.5　占位符語法 .................................................................................147
8.6　部分應用的函數(shù)..........................................................................149
8.7　閉包 .................................................................