C++ Cast And Go Cast

C++

• A static_cast can be used to explicitly convert between related pointer types, such
  
  as void* and double*
• reinterpret_cast can cast between unrelated types, such as int and double* .
• const_cast can “cast away const .”

For example:

int* pi = static_cast<int*>(pv);
Register* in = reinterpret_cast<Register*>(0xff);
void f(const Buffer* p)
{
    Buffer* b = const_cast<Buffer*>(p);
    // . . .
}

Go Cast

There are three methods as follows：

• use ()
  
  example: var b float64 = float64(a)
• stcrcov package
  
  example: num, err := strconv.Atoi(str)
• interface{} type
  
  example: str, ok := i.(string)