双击方括号或圆括号，可获得括号与圆括号匹配。

使用类浏览器显示继承的方法

Apple's API reference documentation does not show methods inherited from a superclass. Sometimes, though. it's useful to be able to see the full range of functionality available for a class -- including a custom class of your own. You can use the Class Browser (from the Project menu) to display a flat or hierarchical list of all the classes related to a current project. The upper pane on the right hand side of the browser window shows a list of methods associated with the object selected in the browser. You can use the Configure Options sheet to select "Show Inherited Members" to show inherited methods as well as those defined by the selected class itself. You click the small book symbol to go to the corresponding documentation.

打印完整的Xcode键盘快捷键列表，并把它放在你的显示器旁边。

Control+R将所选文本作为shell脚本执行，该脚本将在选择后返回粘贴的输出!

我发现使用快捷方式来构建/清理和运行你的项目真的节省了我一些时间:

Cmd-R:构建并运行 Cmd-Y:构建和调试 Cmd-Shift-Enter:停止运行项目 Cmd-Shift-K:清洁构建

无需重新编译的调试日志记录

cdespinosa的回答堆栈溢出问题我如何调试与NSLog(@“内部的iPhone模拟器”)?给出了一种不需要重新编译源代码的调试通过日志技术的方法。这是一个神奇的技巧，可以让代码摆脱调试的麻烦，有一个快速的周转，如果我早一点知道它，就可以为我省去无数的麻烦。

TODO comments

在注释前面加上TODO:将导致它显示在函数“快捷”下拉菜单中，例如:

int* p(0); // TODO: initialize me!