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| interview:developer:ios:start [2017/08/10 23:47] – created don.lee | interview:developer:ios:start [2018/06/04 12:37] (current) – don.lee | ||
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| ===== Question 1 ===== | ===== Question 1 ===== | ||
| - | Consider the following code: | + | * Consider the following code. What's the value of the **len** variable, and why? |
| + | * 参考以下的代码，len的值为何？请解释。 | ||
| < | < | ||
| Line 13: | Line 14: | ||
| </ | </ | ||
| - | What's the value of the **len** variable, and why? | + | |
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| ===== Question 2 ===== | ===== Question 2 ===== | ||
| - | Consider the following code: | + | * Consider the following code. Where is the error and why? How can it be fixed? |
| + | * 参考以下的代码，那里出错了？请解释。如何修复？ | ||
| < | < | ||
| Line 27: | Line 29: | ||
| var result = op1 + op2 + op3 | var result = op1 + op2 + op3 | ||
| </ | </ | ||
| - | |||
| - | Where is the error and why? How can it be fixed? | ||
| ===== Question 3 ===== | ===== Question 3 ===== | ||
| - | Consider the following code: | + | * Consider the following code. What is the bug and how does it affect memory? How can it be fixed? |
| + | * 参考以下的代码，那里出错了以及如何影响内存？如何修复？ | ||
| < | < | ||
| Line 69: | Line 70: | ||
| </ | </ | ||
| - | What is the bug and how does it affect memory? How can it be fixed? | ||
| ===== Question 4 ===== | ===== Question 4 ===== | ||
| + | * Consider the following **UITableViewCell** constructor. What is the purpose of the **reuseIdentifier**? | ||
| + | * 参考以下**UITableViewCell**构造数，**reuseIdentifier**的作用是什麽？把它设定为non-nil值有什麽好处？ | ||
| - | Consider the following **UITableViewCell** constructor: | ||
| < | < | ||
| Line 81: | Line 82: | ||
| </ | </ | ||
| - | What is the purpose of the **reuseIdentifier**? | + | ===== Question 5 ===== |
| + | * Write down the log results at 3 different cases | ||
| + | * Start **MainViewController** | ||
| + | * Push to **ViewControllerTwo** from **MainViewController** | ||
| + | * User press back button from **ViewControllerTwo** | ||
| - | ===== Question | + | * 我们有以下兩段代码，请分别写下以下三种执行后log的结果 |
| + | * 开始 **MainViewController** | ||
| + | * 從 **MainViewController** 推向 **ViewControllerTwo** | ||
| + | * 用户在 **ViewControllerTwo** 按back button | ||
| < | < | ||
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| } | } | ||
| } | } | ||
| + | </ | ||
| + | < | ||
| class ViewControllerTwo: | class ViewControllerTwo: | ||
| | | ||
| Line 171: | Line 181: | ||
| </ | </ | ||
| - | |||
| - | * Write down the log results at 3 different cases | ||
| - | * Start **MainViewController** | ||
| - | * Push to **ViewControllerTwo** form **MainViewController** | ||
| - | * User press back button from **ViewControllerTwo** | ||