C++ 层次代码优化

谈到优化，很多人都会直接想到汇编。难道优化只能在汇编层次吗？当然不是，C++层次一样可以作代码优化，其中有些常常是意想不到的。在C++层次进行优化，比在汇编层次优化具有更好的移植性，应该是优化中的首选做法。-C++ level code optimization comes to optimizing, many people will directly think of assembly. Is it only in the assembly-level optimization do? Of course not, C++ can be used for the same level of code optimization, some of which are often unexpected. In C++ levels of optimization, optimization level than in the assembly has better portability, it should be the preferred approach is to optimize.