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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.heron.common.basics</a></div> |
| <h2 title="Class Pair" class="title">Class Pair<F,​S></h2> |
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| <ul class="inheritance"> |
| <li>java.lang.Object</li> |
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| <pre>public class <span class="typeNameLabel">Pair<F,​S></span> |
| extends java.lang.Object</pre> |
| <div class="block">Container to ease passing around a tuple of two objects. This object provides a sensible |
| implementation of equals(), returning true if equals() is true on each of the contained |
| objects.</div> |
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| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="Pair.html" title="type parameter in Pair">F</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#first">first</a></span></code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code><a href="Pair.html" title="type parameter in Pair">S</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#second">second</a></span></code></th> |
| <td class="colLast"> </td> |
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| <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(F,S)">Pair</a></span>​(<a href="Pair.html" title="type parameter in Pair">F</a> first, |
| <a href="Pair.html" title="type parameter in Pair">S</a> second)</code></th> |
| <td class="colLast"> |
| <div class="block">Constructor for a Pair.</div> |
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| <td class="colFirst"><code>static <A,​B><br><a href="Pair.html" title="class in org.apache.heron.common.basics">Pair</a><A,​B></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#create(A,B)">create</a></span>​(A a, |
| B b)</code></th> |
| <td class="colLast"> |
| <div class="block">Convenience method for creating an appropriately typed pair.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#equals(java.lang.Object)">equals</a></span>​(java.lang.Object o)</code></th> |
| <td class="colLast"> |
| <div class="block">Checks the two objects for equality by delegating to their respective |
| <code>Object.equals(Object)</code> methods.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#hashCode()">hashCode</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Compute a hash code using the hash codes of the underlying objects</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>java.lang.String</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toString()">toString</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns a string representation of this pair.</div> |
| </td> |
| </tr> |
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| <h3>Methods inherited from class java.lang.Object</h3> |
| <code>clone, finalize, getClass, notify, notifyAll, wait, wait, wait</code></li> |
| </ul> |
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| <h4>first</h4> |
| <pre>public final <a href="Pair.html" title="type parameter in Pair">F</a> first</pre> |
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| <h4>second</h4> |
| <pre>public final <a href="Pair.html" title="type parameter in Pair">S</a> second</pre> |
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| <h4>Pair</h4> |
| <pre>public Pair​(<a href="Pair.html" title="type parameter in Pair">F</a> first, |
| <a href="Pair.html" title="type parameter in Pair">S</a> second)</pre> |
| <div class="block">Constructor for a Pair.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>first</code> - the first object in the Pair</dd> |
| <dd><code>second</code> - the second object in the pair</dd> |
| </dl> |
| </li> |
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| <h4>create</h4> |
| <pre class="methodSignature">public static <A,​B> <a href="Pair.html" title="class in org.apache.heron.common.basics">Pair</a><A,​B> create​(A a, |
| B b)</pre> |
| <div class="block">Convenience method for creating an appropriately typed pair.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>a</code> - the first object in the Pair</dd> |
| <dd><code>b</code> - the second object in the pair</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a Pair that is templatized with the types of a and b</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>equals</h4> |
| <pre class="methodSignature">public boolean equals​(java.lang.Object o)</pre> |
| <div class="block">Checks the two objects for equality by delegating to their respective |
| <code>Object.equals(Object)</code> methods.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code>equals</code> in class <code>java.lang.Object</code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>o</code> - the <a href="Pair.html" title="class in org.apache.heron.common.basics"><code>Pair</code></a> to which this one is to be checked for equality</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if the underlying objects of the Pair are both considered |
| equal</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="hashCode()"> |
| <!-- --> |
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| <h4>hashCode</h4> |
| <pre class="methodSignature">public int hashCode()</pre> |
| <div class="block">Compute a hash code using the hash codes of the underlying objects</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code>hashCode</code> in class <code>java.lang.Object</code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a hashcode of the Pair</dd> |
| </dl> |
| </li> |
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| <h4>toString</h4> |
| <pre class="methodSignature">public java.lang.String toString()</pre> |
| <div class="block">Returns a string representation of this pair.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code>toString</code> in class <code>java.lang.Object</code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>format in "<first, second>"</dd> |
| </dl> |
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