3 Assignment

Assignment   

Copy constructors are not the only way we make copies of data.

• Even more common is the use of assignment:

  
  
  
  
  
  
  time2 
  = 
  time1
  ;
      
  
  
  
  
  
  

• Assignment is so common that it can be hard to imagine programming without it
  • though in rare conditions we will do so
  • E.g., you cannot assign istreams and ostreams
    • You cannot copy them by constructor either
• So the compiler will try to be helpful again