16 |
17 | 除了比左侧变量列表靠点击查看状态更快以外，更重要的是允许我们在 debug 过程中执行特定代码，比修改代码重新执行要灵活得多。
18 |
19 | 其他常用命令：
20 |
21 | * expr，和 po 类似，打印结果是另一种风格
22 | * bt，打印当前堆栈
23 |
24 | ## 断点
25 |
26 |
27 |
--------------------------------------------------------------------------------
/KeyBinding.md:
--------------------------------------------------------------------------------
1 | # 热键
2 |
3 | ## 高频热键
4 |
5 | _强烈建议所有人掌握，以下是默认键位_
6 |
7 | Command+B，执行编译任务；
8 |
9 | Command+R，运行，Command+.，停止运行；
10 |
11 | Control+Command+E，重命名选中变量（在当前文件中，跨文件修改用重构功能）；
12 |
13 | 选中一段文本，Command+E，然后按 Command+G 可以在当前文件中循环查找，+Shift 反向遍历；
14 |
15 | 选中一段文本，Command+E，然后按 Command+4，回车，在项目中搜索；
16 |
17 | Command+Shift+O，快速搜索弹窗，搜索符号或文件直接跳转；
18 |
19 | Command+J，在左侧导航中选中当前打开的文件；
20 |
21 | Command+K，清空终端日志（底部调试器的，清空后完整的日志仍能在 Command+9 日志中找到）。
22 |
23 | 在代码编辑界面：
24 |
25 | Command 点击一个符号，跳转到符号定义的位置；
26 |
27 | Option 点击一个符号，显示符号文档（这时候就体现文档注释的作用了）；
28 |
29 | Command+Option 点击一个符号，在另一个标签页展示符号定义的位置；
30 |
31 | 对于 objc 文件，Control+Command+↑(方向键)，快速在头文件和源文件间切换。
32 |
--------------------------------------------------------------------------------
/LISENCE.md:
--------------------------------------------------------------------------------
1 | Creative Commons Attribution 3.0 Unported License
2 | ====
3 |
4 | _A copy can find at http://creativecommons.org/licenses/by/3.0/legalcode_
5 |
6 | THE WORK (AS DEFINED BELOW) IS PROVIDED UNDER THE TERMS OF THIS CREATIVE COMMONS PUBLIC LICENSE ("CCPL" OR "LICENSE"). THE WORK IS PROTECTED BY COPYRIGHT AND/OR OTHER APPLICABLE LAW. ANY USE OF THE WORK OTHER THAN AS AUTHORIZED UNDER THIS LICENSE OR COPYRIGHT LAW IS PROHIBITED.
7 |
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21 |
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28 |
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30 |
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32 |
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44 |
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46 |
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48 |
49 | The above rights may be exercised in all media and formats whether now known or hereafter devised. The above rights include the right to make such modifications as are technically necessary to exercise the rights in other media and formats. Subject to Section 8(f), all rights not expressly granted by Licensor are hereby reserved.
50 |
51 | 4. **Restrictions.** The license granted in Section 3 above is expressly made subject to and limited by the following restrictions:
52 |
53 | a. You may Distribute or Publicly Perform the Work only under the terms of this License. You must include a copy of, or the Uniform Resource Identifier (URI) for, this License with every copy of the Work You Distribute or Publicly Perform. You may not offer or impose any terms on the Work that restrict the terms of this License or the ability of the recipient of the Work to exercise the rights granted to that recipient under the terms of the License. You may not sublicense the Work. You must keep intact all notices that refer to this License and to the disclaimer of warranties with every copy of the Work You Distribute or Publicly Perform. When You Distribute or Publicly Perform the Work, You may not impose any effective technological measures on the Work that restrict the ability of a recipient of the Work from You to exercise the rights granted to that recipient under the terms of the License. This Section 4(a) applies to the Work as incorporated in a Collection, but this does not require the Collection apart from the Work itself to be made subject to the terms of this License. If You create a Collection, upon notice from any Licensor You must, to the extent practicable, remove from the Collection any credit as required by Section 4(b), as requested. If You create an Adaptation, upon notice from any Licensor You must, to the extent practicable, remove from the Adaptation any credit as required by Section 4(b), as requested.
54 |
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56 |
57 | c. Except as otherwise agreed in writing by the Licensor or as may be otherwise permitted by applicable law, if You Reproduce, Distribute or Publicly Perform the Work either by itself or as part of any Adaptations or Collections, You must not distort, mutilate, modify or take other derogatory action in relation to the Work which would be prejudicial to the Original Author's honor or reputation. Licensor agrees that in those jurisdictions (e.g. Japan), in which any exercise of the right granted in Section 3(b) of this License (the right to make Adaptations) would be deemed to be a distortion, mutilation, modification or other derogatory action prejudicial to the Original Author's honor and reputation, the Licensor will waive or not assert, as appropriate, this Section, to the fullest extent permitted by the applicable national law, to enable You to reasonably exercise Your right under Section 3(b) of this License (right to make Adaptations) but not otherwise.
58 |
59 | 5. **Representations, Warranties and Disclaimer**
60 |
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64 |
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66 |
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68 |
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70 |
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74 |
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76 |
77 | c. If any provision of this License is invalid or unenforceable under applicable law, it shall not affect the validity or enforceability of the remainder of the terms of this License, and without further action by the parties to this agreement, such provision shall be reformed to the minimum extent necessary to make such provision valid and enforceable.
78 |
79 | d. No term or provision of this License shall be deemed waived and no breach consented to unless such waiver or consent shall be in writing and signed by the party to be charged with such waiver or consent.
80 |
81 | e. This License constitutes the entire agreement between the parties with respect to the Work licensed here. There are no understandings, agreements or representations with respect to the Work not specified here. Licensor shall not be bound by any additional provisions that may appear in any communication from You. This License may not be modified without the mutual written agreement of the Licensor and You.
82 |
83 | f. The rights granted under, and the subject matter referenced, in this License were drafted utilizing the terminology of the Berne Convention for the Protection of Literary and Artistic Works (as amended on September 28, 1979), the Rome Convention of 1961, the WIPO Copyright Treaty of 1996, the WIPO Performances and Phonograms Treaty of 1996 and the Universal Copyright Convention (as revised on July 24, 1971). These rights and subject matter take effect in the relevant jurisdiction in which the License terms are sought to be enforced according to the corresponding provisions of the implementation of those treaty provisions in the applicable national law. If the standard suite of rights granted under applicable copyright law includes additional rights not granted under this License, such additional rights are deemed to be included in the License; this License is not intended to restrict the license of any rights under applicable law.
--------------------------------------------------------------------------------
/README.md:
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1 | # Xcode 完全指南
2 |
3 |
4 |
5 | * [调试器使用指南](Debugger.md)
6 |
7 | ## 武装你的 Xcode
8 |
9 | * [优化工作区](Workspace.md)
10 | * [热键](KeyBinding.md)
11 | * [使用 Code Snippet 加速编码](CodeSnippet.md)
12 |
13 | ## 问题解决
14 |
15 | 这部分还没规划好，先放这。
16 |
17 | * [案例：Xcode 5 下使用 PSTCollectionView](SolveCase1.md)
18 |
19 | ## Contribute
20 |
21 | Any contribute are welcome, e.g.. translate this repo into another language.
22 |
23 | ## Lisence
24 |
25 | 
This work is licensed under a Creative Commons Attribution 3.0 Unported License.
26 |
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/SolveCase1.md:
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1 | # 案例：更新 SDK 后 PSTCollectionView 闪退问题解决
2 |
3 | ## 写在前面
4 |
5 | 我发现身边有些这样的人：
6 |
7 | * 遇到错误不看错误信息就开始胡乱试着改正的
8 | * 基础的问题，不看文档，不去搜索就开始找人的
9 | * 遇到问题无从下手的
10 |
11 | 所以，这个系列，我想通过展示自己是如何分析解决问题，给有类似情况的人一些指引，得到启发并提高自身解决问题的能力。
12 |
13 | ## 问题描述
14 |
15 | Xcode 更新到 5 之后，用户反映应用在 iOS 5 上闪退。
16 |
17 | ## 解决步骤及动机分析
18 |
19 | 1. 解决这个问题首先要找到闪退的原因，因为用户没有提供额外的信息，只能自己跑跑看了。
20 |
21 | 2. 在 iOS 5 模拟器上跑了一下，果然一启动就报异常了：
22 |
23 | ```log
24 | *** Terminating app due to uncaught exception 'NSInternalInconsistencyException',
25 | reason: 'The NIB data is invalid.'
26 | ```
27 |
28 | 3. 阅读这段错误信息，异常的原因是“The NIB data is invalid”，nib 文件的格式不正确？
29 |
30 | 4. 因为以前没有这种问题，基本可以断定是升级了 Xcode 5 导致的。首先想到的是检查一下 Stroryboard 的设置：
31 | 
32 |
33 | 5. 其中有一项是 Builds for，里面的设置是 iOS 6 及之后，那八成跟这个选项有关。
34 |
35 | 6. 把这个选项改成 iOS 5 再试，⌘+R 运行，结果产生了编译错误：
36 |
37 | ```log
38 | Class Unavailable: UICollectionViewLayout on iOS versions prior to 6.0
39 | Class Unavailable: UICollectionView on iOS versions prior to 6.0
40 | Class Unavailable: UICollectionReusableView on iOS versions prior to 6.0
41 | ```
42 |
43 | 7. 看这个错误信息，很清楚的报告了 UICollectionView 只在 iOS 6 之后可用，而我们现在让它编译为 iOS 5 的版本。
44 |
45 | 8. 现在等于我们在未解决第一个问题的情况下又遇到了第二个问题，那我们现在怎么做？有两种方式，先解决第二个问题，然后继续解决前面的问题；另一个是把第二个问题独立出来，继续解决第一个问题，回头再来解决第二个。
46 |
47 | 9. 两种方式没有绝对的优劣，实际上我们先验证了 Builds for iOS 5 的选项可以解决在 iOS 5 运行的问题后再去解决 Collection View 的问题的。
48 |
49 | 10. 验证的办法我想到两个，一种是建一个新项目，改参数去验证，工作量不大，熟练的不用3分钟吧。另一种是临时去掉第二个问题因素的影响，这个例子就是删掉 Storyboard 中的 UICollectionView，完事后通过版本控制工具撤销掉实验性修改，恢复正常进度。
50 |
51 | 11. 解决第一个问题后，就可以开始解决第二个问题了。这个项目我们用第三方的 PSTCollectionView 来让 UICollectionView 支持 iOS 5 的，乍看上去没有什么思路——Stroyboard 必须按 iOS 5 编译，但 UICollectionView 只在 iOS 6 后可用。
52 |
53 | 12. 这种情况目前想到的办法只有完全用代码写。但在动手前还是先搜索一下其他人是如何解决的（至于有没有人遇到的问题不用考虑了，Xcode 5 Beta 了那么长时间要有这问题肯定都遇到了）。
54 |
55 | 13. 搜索的话一般无非 Google、Stack Overflow，但是当时我的直觉是到 GitHub 上看看，也没想太多。现在如果非要列理由的话，大概是：
56 | * PSTCollectionView 项目本身开发比较活跃，而且其维护人 Peter Steinberger 很靠谱，如果这种问题存在，官方应该已经解决的可能性很大。这应该是最重要的考量因素；
57 | * PSTCollectionView 是一个第三方库，受众相对来说较小，到项目的页面上找资源可能更丰富一些。事后在 Stack Overflow 上搜索 PSTCollectionView 的结果才不到两页。
58 |
59 | 14. 于是到项目页面首先看了一下最近的提交情况，提交频度挺高，不错。这么做是确认这个项目还在积极维护中，状态是良好的。
60 |
61 | 15. 然后我更新了一下本地的 clone，试着跑了一下其中的 demo，不过很失望，也存在这种问题。
62 |
63 | 16. 既然最新的版本也这样，那只能到 Pull Requests 和 Issues 看看了。Pull Requests 没有，直接去看 Issues。
64 |
65 | 17. Open 的 Issues 有 50 个左右，而且不少都是很久以前的了，5个月内活跃的只有十多个：
66 |
67 | * Performance Improvement: Hide cells instead of removing them
68 | * Compilation error when used with other common source libraries
69 | * PSTCollectionView crach on IOS 5 when scroll
70 | * Collection View will not scroll when VoiceOver is activated on iPad
71 | * Lazy loaded collection view does not call viewDidLoad prevAttr initialized to nil and can cause an exception in NSDictionary literal
72 | * Crashes on iOS < 6.0
73 | * Decoration views not working properly
74 | * Assertion topLevelObjects.count == 1 is not neccessary (?)
75 | * PSTCollectionViewLayout layoutAttributesForDecorationViewOfKind:indexPath: always uses static elementKind of PSTCollectionElementKindDecorationView
76 | * Selected issue
77 | * Highlight color doesn't disappear
78 | * Line Layout with imageView, odd behaviour
79 | * Issue when subclassing PSUICollectionViewFlowLayout
80 |
81 | 18. 看标题只有“Crashes on iOS < 6.0”这个符合，但进去看了不是我们遇到的问题，其他的也是一样。
82 |
83 | 19. 还不放弃，看看关闭的吧，已经关的 Issues 很多，但因为是最近的问题，所以不必看很多，前两页足够了（除了时间、评论个数也比较有参考价值）。如果以 iOS 5 为关键字的话，稍微“贴边”的有：
84 |
85 | 1. PSTCollectionView crach on IOS 5 when scroll
86 | 2. PSUICollectionViewCell's user interaction flag not working for iOS5
87 | 3. Correctly decoding reuseIdentifier when loading from Nib
88 | 4. How to use PSTCollectionView in Xcode 5 with Base SDK iOS 7, and minimum supported version of iOS 5
89 | 5. compile error in ios5.1
90 |
91 | 这里面真正符合我们问题的其实只有 4 和 5，而且也正是在 4 中得到的答案。链接奉上：PSTCollectionView/issues/344 （已失效）
92 |
93 | 以上就是解决的全过程。
94 |
95 | 多说一句，Cocoa 的错误信息通常都很准确，说的是哪里的问题就是哪里的。
96 |
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/Workspace.md:
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1 | # 优化工作区
2 |
3 | < [Back](README.md)
4 |
5 | ## 一键切换工作区
6 |
7 |
8 |
9 | 设置方法：Xcode 设置 > Behaviors: 点右下角加号建立新 Behavior，点右侧 ⌘ 区域可以设置热键。
10 |
11 |
12 |
13 | 贴下我的配置供参考：
14 |
15 | * 代码模式，Command+1：[Show] navigator [Project]，[Hide] debugger，[Hide] inspectors，[Show] toolbar
16 | * UI 模式，Command+2：[Hide] navigator，[Hide] debugger，[Show] inspectors，[Hide] toolbar
17 | * 调试模式，Command+7：[Show] navigator [Debug]，[Show] debugger with [Current Views]，[Hide] inspectors
18 | * 日志模式，Command+9：[Show] navigator [Local]，[Hide] debugger，[Hide] inspectors，[Navigate] to [current log]
19 |
20 | 默认 Command+数字键是在左侧导航 tab 间切换的，设置时会提示热键冲突，点 replace 替换即可。
21 |
22 | ## Tips: 模拟器和 Xcode 全屏并列显示
23 |
24 | 先看效果，虽然损失些编辑空间，但是窗口管理省心了：
25 |
26 | 
27 |
28 | 默认模拟器是不可以全屏显示的，打开一个隐藏开关就能支持全屏了，在终端执行：
29 |
30 | ```shell
31 | defaults write com.apple.iphonesimulator AllowFullscreenMode 1
32 | ```
33 |
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/image/code_sinppet_buildin_example1.png:
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