inline specifier

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内联汇编
 

[编辑] 语法

inline function_declaration

[编辑] 说明

inline关键字是一个提示给编译器进行优化。编译器将忽略此请求的自由.
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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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如果编译器内联的功能，它取代了每次调用该函数与实际的身体，而不会产生通话.
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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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这避免了额外的开销创建的堆栈上放置数据和检索结果的函数调用（），但它可能会导致一个更大的可执行代码的功能有被重复多次.
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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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结果是到函数宏类似
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The result is similar to 函数宏
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在当前转换单元，函数体必须是可见的.
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The function body must be visible in the current translation unit.
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类体里面定义​​的类的方法被隐式声明为inline..
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Class methods defined inside the class body are implicitly declared inline.
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[编辑] 为例

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;


来自“http://zh.cppreference.com/mwiki/index.php?title=cpp/language/inline&oldid=28809”