A common gap usually appears in a trading range or congestion area, and reinforces the apparent lack of interest in the stock at that time. Many times this is further exacerbated by low trading volume. Being aware of these types of gaps is good, but doubtful that they will produce a trading opportunities.
Conversion functions (C++ only) You can define a member function of a class, called a conversion function, that converts from the type of its class to another specified type.
Classes, enumerations, typedef names, function types, or array types cannot be declared or defined in the conversion_type. You cannot use a conversion function to convert an object of type A to type A, to a base class of A, or to void. Conversion functions have no arguments, and the return type is implicitly the conversion type. Conversion functions can be inherited. You can have virtual conversion functions but not static ones.