The elements of programming style_elements of programming interviews c++-优快云博客

本文提供了编程时应遵循的一系列规范和最佳实践建议，包括清晰性优先、避免不必要的复杂性、模块化编程、数据结构的选择、代码重构的重要性及调试技巧等。

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Write clearly - don't be too clever 清晰是最重要的，不要耍聪明
Say waht you mean, simply and directly 词要达意
Use library functions 不要重造轮子
Avoid temprorary variables 避免滥用临时变量
Write clearly - don't sacrifice clarity for "efficiency" 清晰性总是第一位的，比性能重要
Let the machine do the dirty work 又脏又累、繁琐的工作让机器做
Replace repetitive expressions by calls to a common function 代码复用、重构
Parenthesize to avoid ambiguity 使用括号消除歧义
Choos variable names that won't be confused 选择变量名称
Avoid the Fortran arithmetic IF
Avoid unnecessary branches
Use the good freatures of a language; avoid the bad ones 择善而用
Don't use conditional braches as a substitute for a logical expression
Use the "telephone test" for readability 选用清晰的逻辑表达
Use DO-END and indenting to delimit groups of statements
Use IF-ELSE to emphasize that only one of two actions is to be performed
Used DO and DO-WHILE to emphasize the presence of loops
Make your programs read from top to bottom 保证程序从上至下阅读，慎用GOTO
Use IF...ELSE IF...ELSE IF...ELSE... to implement multi-way branches
Use the fundamental control flow constructs 使用语言提供的本征控制结构
Write first in an easy-to-understand pseudo-language' then translate into whatever language you have to use 易于理解的伪代码
Avoid THEN-IF and null ELSE
Avoid ELSE GOTO and ELSE RETURN
Follow each decision as closely as possible with its associated action 将功能和语义相近的代码尽可能的放在一起
Use data arrays to avoid repetitive control sequences 使用循环简化重复
Choose a data representation that makes the program simple 选择和调整数据结构，以使程序简单
Don't stop with your first draft 第一个草稿不能用
Modularize. Use subroutines 模块化
Make the coupling between modules visible 模块耦合清晰
Each module should do one thing well 一次只做好一件事
Make sure eavery module hides something 信息隐藏
Let the data structure the program 数据决定程序整体结构，以数据为中心
Don't patch bad code - rewrite it 重写烂代码
Write and test a big program in small pieces
Use recursive procedures for recursively-defined data structures
Test input for validity and plausibility 一定要检查输入
Make sure input cannot violate the limits of the program 检查输入在合理范围内
Terminate input by end-of-file or marker, not by count
Identify bad input; recover if possible
Treat end of file condtions in a uniform manner
Make input easy to prepare and output self-explanatory
Use uniform input formats
Make input easy to proofread
Use free-form input when possible
Use sefl-indentifying input. Allow defaults. Echo both on output
Localize input and output in subroutines
Make sure all variables are initialized before use 保证所有变量使用前初始化
Don't stop at one bug BUG多多
Use debugging compilers
Initialize contants with DATA statements or INITIAL attributes; initialize variables with executable code 显式的初始化常量
Watch out for off-by-one errors 小心多一错误
Take care to branch the right way on equality 小心处理变量相等情形
Avoid mutiple exits from loops
Make sure your code "does nothing" gracefully
Test programs at their boundary values 测试代码边界
Program defensively 防御编程
10.0 times 0.1 is hardly ever 1.0
Don't compare floating point numbers just for equality 避免比较两个浮点数是否相等
Make it right before you make it faster 调优之前要保证代码正确
Keep it right when you make it faster 调优过程中要保证代码正确
Make it clear before you make it faster 调优过程中要保证代码清晰
Don't sacrifice clarity for small gains in "efficiency" 不要为蝇头小利牺牲清晰性
Let your compiler do the simple optimizations
Don't strain to re-use code; reorganize instead 处处重构
Make sure special cases are truly special
Keep it simple to make it faster 优化过程中要保持简单性
Don't diddle code to make it faster - find a better algorithm 找一个更好的算法
Instrument your program. Measure before making "efficiency" changes 测量是优化的基础
Make sure comments and code agree 注释避免驴唇不对马嘴
Don't just echo the code with comments - make every comment count
Don't comment bad code - rewrite it 不注释烂代码，重写之
Use variable names that mean something 变量名字要选好，望文生义最好
Use statement labels that mean something
Format a program to help the reader understand it 美化代码
Indent to show the logical structure of a program 美化代码
Document your data layouts
Don't over-comment 少说废话