Writing Object-Oriented Code

摘要

Software programming languages have always been designed around two fundamental concepts: data and the code that acts on the data. Languages have evolved over time to change the way these two concepts interact. Originally, languages such as Pascal and C invited developers to write software that dealt with code and data as two separate, disconnected entities. This approach gives developers the freedom, but also the burden, to choose how their code handles the data. Furthermore, this approach forces a developer to translate the real world that needs to be modeled using software into a computer-specific model using data and code. Languages like Pascal and C were built around the concept of a procedure. A procedure is a named block of code, just as a C# method is built today. The style of software developed using these kinds of languages is called procedural programming. In procedural programming, the developer writes one or more procedures and works with a set of independent variables defined in the program. All procedures are visible from any piece of code in the application, and all variables can be manipulated from any piece of code?