just do IT

We know that compiler will expand macros before it actually compiles the code. Sometimes it's useful if we can view the result of the expansion, especially when we use macro to implement some functions. Here is how:Microsoft C++ compiler: cl.e

I came across a question regarding c++, is it more efficient to use memcmp to determine equality of two objects of the same type.This is not a question regarding efficiency at all, it's about correctness. Using memcmp to compare two objects MAY be correct

dynamic_cast is a run-time type conversion operator and it ensures only valid conversion can success. The expression dynamic_cast(src) converts expression src to dest_type if appropriate, fails otherwise. Unlike static_cast, it performs type checking at ru

Logging is a widely used debugging means. As a way of implementing logging, I saw printf used in a lot of places. It's so quick and easy to use printf to examine the behavior of an application. But it also has heavy impact of the performance of the applica

offsetof is a widely used means in c and c++ to find out the offset of a member variable in its struct or class. The most normal way to implement it is via following macro: #define offsetof(st, m) ((size_t) ( (char *)&((st *)(0))->m - (char *)0 ))The idea