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Namespace aliases

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Namespace Aliase
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Namespace Aliase ermöglichen es dem Programmierer, um einen alternativen Namen für eine Namespace definieren .
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Namespace aliases allow the programmer to define an alternate name for a namespace.
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Sie werden üblicherweise als eine bequeme Abkürzung für lange oder tief verschachtelten Namespaces verwendet .
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They are commonly used as a convenient shortcut for long or deeply-nested namespaces.
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Inhaltsverzeichnis

[Bearbeiten] Syntax

namespace alias_name = ns_name; (1)
namespace alias_name = ::ns_name; (2)
namespace alias_name = nested_name::ns_name; (3)

[Bearbeiten] Erklärung

Die neuen Alias ​​alias_name bietet eine alternative Methode für den Zugriff ns_name .
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The new alias alias_name provides an alternate method of accessing ns_name.
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alias_name muss ein Name bisher nicht verwendet werden. alias_name ist für die Dauer der Rahmen in den sie eingeführt gültige .
Original:
alias_name must be a name not previously used. alias_name is valid for the duration of the scope in which it is introduced.
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[Bearbeiten] Beispiel

#include <iostream>
 
namespace foo {
    namespace bar {
         namespace baz {
             int qux = 42;
         }
    }
}
 
namespace fbz = foo::bar::baz;
 
int main()
{
    std::cout << fbz::qux << '\n';
}

Output:

42

[Bearbeiten] Siehe auch

Namespace-Deklaration
kennzeichnet einen Namensraum
Original:
identifies a namespace
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[edit]