原题: 4.When programmers add new elements to an enumeration, they sometimes forget to add new cases to the appropriate switch statements. How could you use assertions to help detect this problem? 附录中的答案: . . . default: ASSERT(FALSE); /*We should never…
整理下目录,看了这个文件,幸好未删除. 以下是<write solid code>中的原文摘录. 1.How could I have prevented this bug? 2.How could I have automatically detected this bug? 3.If a programmer believes that a bug can simply "go away", or that fixing bugs "later" w…
Use Intention-Revealing Names The name should tell you why it exists, what it does, and how it is used. e.g. Bad code: public List<int[]> getThem(){ List<int[]> list1 = new ArrayList<int[]>(); for (int[] x : theList) if (x[0] == 4) list1…
Error handling is important, but if it obscures logic, it's wrong. Use Exceptions Rather Than Return Codes Separate the normal operations with error handlings. e.g. Bad code: public class DeviceController { ... public void sendShutDown() { DeviceHand…
Data Abstraction Hiding implementation Data/Object Anti-Symmetry Objects hide their data behind abstractions and expose function that operate on that data. Data structure expose their data and hava no meaningful functions. Procedural code(code using…
The Purpose of Formatting Code formatting is about communication, and communication is the professional developer's first order of business. Vertical Formatting File size: less than 200~500 lines. The Newspaper Metaphor We would like a source file to…
“Don’t comment bad code—rewrite it.”——Brian W.Kernighan and P.J.Plaugher The proper use of comments is to compensate for our failure to express ourself in code. Truth can only be found in one place: the code. Comments Do Not Make Up for Bad Code Rath…
Small Blocks and Indenting The blocks within if statements, else statements, while statements, and so on should be one line long. Probably that line should be a function call. Functions shouldn't be large enough to hold nested structures. The indent…
