[c++11][NOTE] Notes for Writing-Quick-Code-in-Cpp-Quickly , going native 2013

• Prefer ZERO to all other constants
• then ONE

• Using Virtual Table for HOT i-cache
• but still, depends on compiler's implementation
• WRITE OUR OWN VTABLE!

• SWITCH:
• good for up to 7 branches
• mix could and hot code
• code for distinct types stays together
• effectively trades off  modularity for performance

• Future:
• elide move just like rvo/nrvo

Reference:
Writing-Quick-Code-in-Cpp-Quickly,Andrei Alexandrescu
How can I cause an instruction cache miss?
Is RVO (Return Value Optimization) on unnamed objects a universally guaranteed behavior?
Want Speed? Pass by Value. 
c++: RVO and NRVO