学习笔记之IKM C++ 11

c-cpp/学习笔记之IKM C++ 11 at main · haoran119/c-cpp (github.com) 

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• Q1. If most of the calls to function foo() below pass one of 10 particular values, which method will significantly reduce the execution time of calling the function?
• A. Replace * with an if-else block testing for the 10 values, assigning r accordingly
• B. Remove inline
• C. Delete foo() and move the time-consuming operation to its caller
• D. Replace * with code performing a table lookup, with the 10 values and corresponding values of r 
• E. Replace * with swtich
• A1. D ?

1 inline int foo (int x) {
2   int r;
3 
4   * // time-consuming operation on x, result stored in r
5 
6   return r;    
7 }

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