272: Highlights

• A predicate is a function that returns 0 or 1.
• In C++, 0 means false, and 1 means true.
• The ! operator means not; the ! operator transforms 0 into 1 and any integer other than 0 into 0.
• If you want to force the conversion of a value of one type into the corresponding value of another type, then you must cast the value by instantiating the following pattern:

  (type) expression 
  

• If you want to compare two numbers of different types, then you must cast one to match the type of the other.