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<div class="t-tr-text">C + +: conceitos<div class="t-tr-dropdown"><div><div><div class="t-tr-dropdown-arrow-border"></div><div class="t-tr-dropdown-arrow"></div><div class="t-tr-dropdown-h">Original:</div><div class="t-tr-dropdown-orig">C++ concepts:</div><div class="t-tr-dropdown-notes">The text has been machine-translated via [http://translate.google.com Google Translate].<br/> You can help to correct and verify the translation. Click [http://en.cppreference.com/w/Cppreference:MachineTranslations here] for instructions.</div></div></div></div></div> DefaultConstructible

De cppreference.com

<metanoindex/>

Especifica que uma instância do tipo pode ser padrão construído.

Original:

Specifies that an instance of the type can be default constructed.

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Requisitos

O tipo deve implementar as seguintes funções:

Original:

The type must implement the following functions:

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Type::Type

<tbody> </tbody>

construtor padrão: constructs an instance of a type with default contents.

The following expressions must have the specified effects:

Expressão

Original:

Expression

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Effects
Type a1;

a1 é padrão inicializada .

Original:

a1 is default-initialized.

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Type a2{};

a2 é valor inicializado .

Original:

a2 is value-initialized.

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Type{}
Type()

um objeto temporário de Type tipo é de valor inicializado .

Original:

a temporary object of type Type is value-initialized.

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