基本防御性编程
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Favorite (Clever) Defensive Programming Best Practices
I am always advised by some programmers to pay concentration to easy debugging. What is defensive programming and to which extend should it be considered while practicing?
And one more important question: is there any key things to consider while coding and what are they?
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根据经验，如果您发现自己在想“这将永远是正确的”，请在该位置写入
ASSERT(condition)。这可能是防御性编程的核心；）。As a rule of thumb -- if you catch yourself thinking "this will always be true", write
ASSERT( condition)in that place. That is probably the core of what defensive programming should be ;).如果防御性编程只意味着一件事，那就应该广泛使用断言。
这里是一篇关于何时和在哪里使用
断言。If defensive programming meant only one thing , that should be use assert extensively.
Here is a good article about when and where to use
assert.http://en.wikipedia.org/wiki/Defective_programming
防御性编程意味着您检查文件是否存在并且您是否有权打开它，而不是仅仅尝试打开它并捕获任何最终的异常。
（仅举个例子）
http://en.wikipedia.org/wiki/Defensive_programming
Defensive programming means, that you check if a file exists and if you have the permissions to open it instead of just trying to open it and catching any eventual exceptions.
(Just an example)