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inline specifier

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Inline Montage
 

[Bearbeiten] Syntax

inline function_declaration

[Bearbeiten] Beschreibung

Das Schlüsselwort inline ist ein Hinweis gegeben, der Compiler eine Optimierung durchzuführen. Der Compiler hat die Freiheit, diese Anforderung zu ignorieren .
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The inline keyword is a hint given to the compiler to perform an optimization. The compiler has the freedom to ignore this request.
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Wenn der Compiler inlines die Funktion, ersetzt es jedes Aufruf dieser Funktion mit dem eigentlichen Körper (ohne einen Anruf) .
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If the compiler inlines the function, it replaces every call of that function with the actual body (without generating a call).
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Dies vermeidet zusätzlichen Overhead durch den Aufruf der Funktion (Platzierung Daten auf Stack und Abrufen des Ergebnisses) erstellt, aber es kann in einem größeren ausführbare führen, da der Code für die Funktion muss mehrfach wiederholt werden .
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This avoids extra overhead created by the function call (placing data on stack and retrieving the result) but it may result in a larger executable as the code for the function has to be repeated multiple times.
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Das Ergebnis ist ähnlich funktionsähnlichen Makros
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The result is similar to funktionsähnlichen Makros
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Die Funktion Körper muss gut sichtbar sein in der aktuellen Übersetzungseinheit .
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The function body must be visible in the current translation unit.
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Klasse Methoden innerhalb der Klasse Körper definiert werden implizit als inline deklariert .
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Class methods defined inside the class body are implicitly declared inline.
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[Bearbeiten] Beispiel

inline int sum(int a, int b) 
{
    return (a + b);
}
 
int c = sum(1, 4);
// if the compiler inlines the function the compiled code will be the same as writing
int c = 1 + 4;