andre/the-swift-programming-language-in-chinese
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

make gitbook

Browse Source
This commit is contained in:
numbbbbb
2014-06-14 20:51:32 +08:00
parent e00caf63d5
commit 31f083eb83
68 changed files with 1893 additions and 1795 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
chapter2/23_Advanced_Operators.html Executable file → Normal file
View File

@ -46,7 +46,7 @@
<div class="book" data-level="2.23" data-basepath=".." data-revision="1402677669306">
<div class="book" data-level="2.23" data-basepath=".." data-revision="1402750255397">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
@ -268,7 +268,7 @@
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 附属脚本
<i class="fa fa-check"></i> <b>2.12.</b> 下标脚本
</a>
@ -520,7 +520,7 @@
<a href="../chapter2/11_Methods.html" title="方法" class="chapter done " data-progress="2.11" style="left: 18.42105263157895%;"></a>
<a href="../chapter2/12_Subscripts.html" title="附属脚本" class="chapter done " data-progress="2.12" style="left: 21.05263157894737%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标脚本" class="chapter done " data-progress="2.12" style="left: 21.05263157894737%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter done " data-progress="2.13" style="left: 23.68421052631579%;"></a>
@ -587,7 +587,7 @@
<div class="page-inner">
<section class="normal" id="section-gitbook_131">
<section class="normal" id="section-gitbook_78">
<blockquote>
<p>翻译：xielingwang</p>
@ -855,7 +855,7 @@ let afterIncrement = ++toIncrement
return !(left == right)
}
</code></pre>
<p>上述代码实现了相等运算符<code>==</code>来判断两个<code>Vector2D</code>对象是否有相等的值，相等的概念就是他们有相同的<code>x</code>值和相同的<code>y</code>值，我们就用这个逻辑来实现。接着使用<code>==</code>的结果实现了不相等运算符<code>!=</code>。</p>
<p>上述代码实现了相等运算符<code>==</code>来判断两个<code>Vector2D</code>对象是否有相等的值，相等的概念就是它们有相同的<code>x</code>值和相同的<code>y</code>值，我们就用这个逻辑来实现。接着使用<code>==</code>的结果实现了不相等运算符<code>!=</code>。</p>
<p>现在我们可以使用这两个运算符来判断两个<code>Vector2D</code>对象是否相等。</p>
<pre><code class="lang-swift">let twoThree = Vector2D(x: 2.0, y: 3.0)
let anotherTwoThree = Vector2D(x: 2.0, y: 3.0)
@ -895,7 +895,7 @@ let secondVector = Vector2D(x: 3.0, y: 4.0)
let plusMinusVector = firstVector +- secondVector
// plusMinusVector 此时的值为 (4.0, -2.0)
</code></pre>
<p>这个运算符把两个向量的<code>x</code>相加，把向量的<code>y</code>相减。因为他实际是属于加减运算，所以让它保持了和加法一样的结合性和优先级(<code>left</code>和<code>140</code>)。查阅完整的Swift默认结合性和优先级的设置，请移步<a href="../chapter3/04_Expressions.html">表达式</a>;</p>
<p>这个运算符把两个向量的<code>x</code>相加，把向量的<code>y</code>相减。因为它实际是属于加减运算，所以让它保持了和加法一样的结合性和优先级(<code>left</code>和<code>140</code>)。查阅完整的Swift默认结合性和优先级的设置，请移步<a href="../chapter3/04_Expressions.html">表达式</a>;</p>
</section>