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Code Craft by Pete Goodliffe

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What Do We Design?

Programmers design code structures, obviously. But this means different things at different stages of the development process. At each stage, design is a process of decomposing the task into its constituent parts and figuring out how each part works.

These levels of software design are:

The system architecture

Here we look at the system as a whole, identify the main subsystems, and work out how they communicate. The architectural design has the most influence on the performance and characteristics of the system as a whole and the least impact on specific lines of code. It is the most important design act and is covered in the next chapter. In this chapter, we're concerned with the internal design of code, which involves the subsequent ...

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