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…

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…

“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…

Exception guidelines Use exceptions to: Handle problems at the appropriate level.(Avoid catching exceptions unless you know what to do with them.) Fix the problem and call the method that caused the exception again. Patch things up and continue witho…

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…

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…

目录 . 应用场景 . Use Case Code Analysis . 和setjmp.longjmp有关的glibc and eglibc 2.5, 2.7, 2.13 - Buffer Overflow Vulnerability 1. 应用场景 非局部跳转通常被用于实现将程序控制流转移到错误处理模块中:或者是通过这种非正常的函数返回机制,返回到之前调用的函数中 . setjmp.longjmp的典型用途是异常处理机制的实现:利用longjmp恢复程序或线程的状态,甚至可以跳过栈中多层的函…

Erlang error handling Contents Preface try-catch Process link Erlang-way error handling OTP supervisor tree Restart process 0. Preface 说到容错处理,大概大家都会想到 try-catch 类结构,对于绝大多数传统语言来说,确实是这样.但是对于Erlang来说,容错处理是其一个核心特性,真正涉及到的是整个系统的设计,与 try-catch 无关:其核心是Erlang…

Use Exceptions Rather Than Return Codes Back in the distant past there were many languages that didn't have exceptions.In those languages the techniques for handling and reportiing errors were limited.You either set an error flag or returned an error…