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2014-06-11 21:26:49 +08:00
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chapter2/02_Basic_Operators.html
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@ -46,7 +46,7 @@
<div class="book" data-level="2.2" data-basepath=".." data-revision="1402469604919">
<div class="book" data-level="2.2" data-basepath=".." data-revision="1402493167130">
<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>
@ -587,20 +587,20 @@
<div class="page-inner">
<section class="normal" id="section-gitbook_46">
<section class="normal" id="section-gitbook_144">
<h1 id="-">基本运算符</h1>
<hr>
<p>本页包含内容：</p>
<ul>
<li><a href="#terminology">术语</a> </li>
<li><a href="#assignment_operator">赋值运算符</a> </li>
<li><a href="#arithmetic_operators">数值运算符</a> </li>
<li><a href="#compound_assignment_operators">组合赋值运算符(Compound Assignment Operators)</a> </li>
<li><a href="#comparison_operators">比较运算符</a> </li>
<li><a href="#ternary_conditional_operator">三目条件运算符(Ternary Conditional Operator)</a> </li>
<li><a href="#range_operators">区间运算符</a> </li>
<li><a href="#logical_operators">逻辑运算符</a> </li>
<li><a href="#terminology">术语</a></li>
<li><a href="#assignment_operator">赋值运算符</a></li>
<li><a href="#arithmetic_operators">数值运算符</a></li>
<li><a href="#compound_assignment_operators">组合赋值运算符(Compound Assignment Operators)</a></li>
<li><a href="#comparison_operators">比较运算符</a></li>
<li><a href="#ternary_conditional_operator">三目条件运算符(Ternary Conditional Operator)</a></li>
<li><a href="#range_operators">区间运算符</a></li>
<li><a href="#logical_operators">逻辑运算符</a></li>
</ul>
<p>运算符是检查，改变，合并值的特殊符号或短语。例如，加号<code>+</code>把计算两个数的和(如 <code>let i = 1 + 2</code>)。复杂些的运行算包括逻辑与<code>&amp;&amp;</code>(如 <code>if enteredDoorCode &amp;&amp; passedRetinaScan</code>)，还有自增运算符<code>++i</code>这样让自身加一的便捷运算。</p>
<p>Swift支持大部分标准C语言的运算符，且改进许多特性来减少常规编码错误。如，赋值符<code>=</code>不返回值，以防止错把等号<code>==</code>写成赋值号<code>=</code>而导致Bug。数值运算符(<code>+</code>，<code>-</code>，<code>*</code>，<code>/</code>，<code>%</code>等)会检测并不允许值溢出，以此来避免保存变量时由于变量大于或小于其类型所能承载的范围时导致的异常结果。当然允许你选择使用Swift的溢出运算符来玩溢出。具体使用请移步<a href="23_Advanced_Operators.html#overflow_operators">溢出运算符</a>。</p>
@ -945,6 +945,6 @@ require(["gitbook"], function(gitbook) {
</script>
</body>
<script src="http://s19.cnzz.com/z_stat.php?id=1000480711&web_id=1000480711" language="JavaScript"></script></body>
</html>