isuninitializedlazyobject.xml

<?xml version="1.0" encoding="utf-8"?>
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<refentry xml:id="reflectionclass.isuninitializedlazyobject" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
 <refnamediv>
  <refname>ReflectionClass::isUninitializedLazyObject</refname>
  <refpurpose>オブジェクトがレイジーで未初期化かどうかを調べる</refpurpose>
 </refnamediv>

 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis role="ReflectionClass">
   <modifier>public</modifier> <type>bool</type><methodname>ReflectionClass::isUninitializedLazyObject</methodname>
   <methodparam><type>object</type><parameter>object</parameter></methodparam>
  </methodsynopsis>
  <simpara>
   オブジェクトがレイジーで未初期化かどうかを調べます。
  </simpara>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <variablelist>
   <varlistentry>
    <term><parameter>object</parameter></term>
    <listitem>
     <simpara>
      調べるオブジェクト。
     </simpara>
    </listitem>
   </varlistentry>
  </variablelist>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <simpara>
   <parameter>object</parameter> が未初期化のレイジーオブジェクトであれば &true; を、
   そうでなければ &false; を返します。
  </simpara>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <example>
   <title>基本的な使用法</title>
   <programlisting role="php">
<![CDATA[
<?php
class Example
{
    public function __construct(public int $prop) {
    }
}

$reflector = new ReflectionClass(Example::class);

$object = $reflector->newLazyGhost(function ($object) {
    echo "Initializer called\n";
    $object->__construct(1);
});

var_dump($reflector->isUninitializedLazyObject($object));

var_dump($object->prop);

var_dump($reflector->isUninitializedLazyObject($object));
?>
]]>
   </programlisting>
   &example.outputs;
   <screen>
<![CDATA[
bool(true)
Initializer called
int(1)
bool(false)
]]>
   </screen>
  </example>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <simplelist>
   <member><link linkend="language.oop5.lazy-objects">レイジーオブジェクト</link></member>
   <member><methodname>ReflectionClass::newLazyGhost</methodname></member>
   <member><methodname>ReflectionClass::markLazyObjectAsInitialized</methodname></member>
   <member><methodname>ReflectionClass::initializeLazyObject</methodname></member>
  </simplelist>
 </refsect1>

</refentry>
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