iOS Foundation 框架中 Mutable 的類們 – iPhone手機開發技術文章 iPhone軟體開發教學課程

Mutable 對於那些不能直接對其中內容進行更改的類來說，是一種擴展方式，象數值這類的，不涉及到指針的，就沒有 Mutable 子類，可能是因為其本身可以直接修改自身值吧。

換句話說，象字符串這類內容與地址不同且都可以被更改的存儲，在高級語言中，更關心的是內容的更改，尤其象 Java 已經用“引用”淡化瞭指針的概念，而實際內部是在操作指針這類東西，我也是估計的。

Title	Resource Type	Topic	Framework	Date
NSMutableArray Class Reference	Reference	Data Management Data Types & Collections	Foundation	2013-10-22 Minor Change
NSMutableAttributedString Class Reference	Reference	Data Management Strings, Text, & Fonts	Foundation	2010-02-25 Content Update
NSMutableAttributedString UIKit Additions Reference	Reference	Data Management Strings, Text, & Fonts	UIKit	2013-09-18 First Version
NSMutableCharacterSet Class Reference	Reference	Data Management Strings, Text, & Fonts	Foundation	2006-05-23 Minor Change
NSMutableCopying Protocol Reference	Reference		Foundation	2006-05-23 Minor Change
NSMutableData Class Reference	Reference	Data Management Data Types & Collections	Foundation	2007-03-26 Minor Change
NSMutableDictionary Class Reference	Reference	Data Management Data Types & Collections	Foundation	2013-10-22 Minor Change
NSMutableIndexSet Class Reference	Reference	Data Management Data Types & Collections	Foundation	2014-02-11 Minor Change
NSMutableOrderedSet Class Reference	Reference	Data Management Data Types & Collections	Foundation	2013-10-22 Minor Change
NSMutableParagraphStyle Class Reference	Reference	Data Management Strings, Text, & Fonts	UIKit	2013-09-18 Minor Change
NSMutableSet Class Reference	Reference	Data Management Data Types & Collections	Foundation	2013-10-22 Minor Change
NSMutableString Class Reference	Reference	Data Management Strings, Text, & Fonts	Foundation	2007-03-06 Minor Change
NSMutableURLRequest Class Reference	Reference	Networking & Internet Protocol Streams	Foundation	2014-02-11 Minor Change

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