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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html dir="ltr" xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html;charset=UTF-8" />
<meta name="generator" content=
"HTML Tidy for Mac OS X (vers 25 March 2009), see www.w3.org" />
<title>Scala 2.8 コレクション API -- スタック</title>
<link rel="stylesheet" type="text/css" href="guide.css" />
</head>
<body dir="ltr">
<table width="100%" cellpadding="0" cellspacing="2">
<tr>
<td bgcolor="#99CCFF"><a href="collections_33.html"><img border="0"
alt="配列スタック" src="next.png" /></a></td>
<td bgcolor="#99CCFF"><a href="collections_23.html"><img border="0"
alt="具象可変コレクションクラス" src="up.png" /></a></td>
<td bgcolor="#99CCFF"><a href="collections_31.html"><img border="0"
alt="配列シーケンス" src="previous.png" /></a></td>
<td align="center" bgcolor="#99CCFF" width="100%"><b>スタック</b></td>
<td bgcolor="#99CCFF" align="center" class="tocref"><a href=
"collections_49.html">目次</a></td>
</tr>
</table>
<blockquote style=
"border-left: 1px solid gray; font-family: Century, Times, 'Times New Roman', 'MS Gothic', serif; padding-left: 1em;">
最新版は <a href="http://docs.scala-lang.org/ja/overviews/collections/concrete-mutable-collection-classes.html">Scala Documentation</a> に移行しました。
</blockquote>
<h2>スタック</h2>
<p>既に不変スタックについては説明した。スタックには、<a href=
"http://www.scala-lang.org/api/current/scala/collection/mutable/Stack.html"><tt>mutable.Stack</tt></a>
クラスにより実装される可変バージョンもある。変更が上書き処理されるという違いの他は、不変バージョンと全く同じように動作する。</p>
<div class="quote">
<table cellspacing="1" cellpadding="0">
<tr>
<td></td>
</tr>
<tr>
<td colspan="99" align="left"><tt>scala> <font color=
"#0000E5">val</font> stack = <font color=
"#0000E5">new</font> <font color=
"#660099">scala.collection.mutable.</font></tt><tt><font color=
"#660099">Stack[Int]</font> </tt></td>
</tr>
<tr>
<td></td>
</tr>
<tr>
<td colspan="99" align="left"><tt><font color=
"#590000">stack: scala.collection.mutable.</font></tt><tt><font color="#590000">Stack[Int] = Stack()</font></tt></td>
</tr>
<tr>
<td></td>
</tr>
<tr>
<td colspan="99" align="left">
<tt>scala> stack.push(<font color=
"#000000">1</font>)</tt></td>
</tr>
<tr>
<td></td>
</tr>
<tr>
<td colspan="99" align="left"><tt><font color=
"#590000">res0: stack.type = Stack(1)</font></tt></td>
</tr>
<tr>
<td></td>
</tr>
<tr>
<td colspan="99" align="left"><tt>scala> stack</tt></td>
</tr>
<tr>
<td></td>
</tr>
<tr>
<td colspan="99" align="left"><tt><font color=
"#590000">res1: scala.collection.mutable.</font></tt><tt><font color="#590000">Stack[Int] = Stack(1)</font></tt></td>
</tr>
<tr>
<td></td>
</tr>
<tr>
<td colspan="99" align="left">
<tt>scala> stack.push(<font color=
"#000000">2</font>)</tt></td>
</tr>
<tr>
<td></td>
</tr>
<tr>
<td colspan="99" align="left"><tt><font color=
"#590000">res0: stack.type = Stack(1, 2)</font></tt></td>
</tr>
<tr>
<td></td>
</tr>
<tr>
<td colspan="99" align="left"><tt>scala> stack</tt></td>
</tr>
<tr>
<td></td>
</tr>
<tr>
<td colspan="99" align="left"><tt><font color=
"#590000">res3: scala.collection.mutable.</font></tt><tt><font color="#590000">Stack[Int] = Stack(1, 2)</font></tt></td>
</tr>
<tr>
<td></td>
</tr>
<tr>
<td colspan="99" align="left">
<tt>scala> stack.top</tt></td>
</tr>
<tr>
<td></td>
</tr>
<tr>
<td colspan="99" align="left"><tt><font color=
"#590000">res8: Int = 2</font></tt></td>
</tr>
<tr>
<td></td>
</tr>
<tr>
<td colspan="99" align="left"><tt>scala> stack</tt></td>
</tr>
<tr>
<td></td>
</tr>
<tr>
<td colspan="99" align="left"><tt><font color=
"#590000">res9: scala.collection.mutable.</font></tt><tt><font color="#590000">Stack[Int] = Stack(1, 2)</font></tt></td>
</tr>
<tr>
<td></td>
</tr>
<tr>
<td colspan="99" align="left">
<tt>scala> stack.pop </tt></td>
</tr>
<tr>
<td></td>
</tr>
<tr>
<td colspan="99" align="left"><tt><font color=
"#590000">res10: Int = 2</font></tt></td>
</tr>
<tr>
<td></td>
</tr>
<tr>
<td colspan="99" align="left">
<tt>scala> stack </tt></td>
</tr>
<tr>
<td></td>
</tr>
<tr>
<td colspan="99" align="left"><tt><font color=
"#590000">res11: scala.collection.mutable.</font></tt><tt><font color="#590000">Stack[Int] = Stack(1)</font></tt></td>
</tr>
</table>
</div>
<p>続いては、<a href="collections_33.html">配列スタック</a></p>
<hr />
<table width="100%" cellpadding="0" cellspacing="2">
<tr>
<td bgcolor="#99CCFF"><a href="collections_33.html"><img border="0"
alt="配列スタック" src="next.png" /></a></td>
<td bgcolor="#99CCFF"><a href="collections_23.html"><img border="0"
alt="具象可変コレクションクラス" src="up.png" /></a></td>
<td bgcolor="#99CCFF"><a href="collections_31.html"><img border="0"
alt="配列シーケンス" src="previous.png" /></a></td>
<td align="center" bgcolor="#99CCFF" width="100%"><b>スタック</b></td>
<td bgcolor="#99CCFF" align="center" class="tocref"><a href=
"collections_49.html">目次</a></td>
</tr>
</table>
</body>
</html>