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<h2 title="接口 NullableIntegerFunction1" class="title">接口 NullableIntegerFunction1&lt;T0&gt;</h2>
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<dt><span class="paramLabel">类型参数:</span></dt>
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<dd><a href="../../../../../org/apache/calcite/linq4j/function/Function.html" title="org.apache.calcite.linq4j.function中的接口">Function</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="java.lang中的类或接口">Integer</a>&gt;, <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口">Function1</a>&lt;T0,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="java.lang中的类或接口">Integer</a>&gt;</dd>
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<pre>public interface <span class="typeNameLabel">NullableIntegerFunction1&lt;T0&gt;</span>
extends <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口">Function1</a>&lt;T0,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="java.lang中的类或接口">Integer</a>&gt;</pre>
<div class="block">Function that takes one parameter and returns an <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="java.lang中的类或接口"><code>Integer</code></a> value that
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<code><a href="../../../../../org/apache/calcite/linq4j/function/Function1.html#IDENTITY">IDENTITY</a></code></li>
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<code><a href="../../../../../org/apache/calcite/linq4j/function/Function1.html#apply-T0-">apply</a></code></li>
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