In years of experience, I contributed to numerous projects that helped clients achieve their goals. : Keep It Simple and Sincere My Professional Assistance. Simplified HVAC and Mechanical Systems Design, LLC K.I.S.S.
Keep It Simple How To Keep It
D Do unto others as you would want them to do unto you. C Care for those who need your help. B Believe that God has a plan for your life. A Alert to know you will be tempted. How To Keep It Simple And Live A Healthy Life.
Keep It Simple Code Is Less
With its new colorful illustrations, comprehensive index, and straightforward advice, this easy cover-to-cover read will also be your quick go-to reference guide. Clear, concise, and easy to read, Breastfeeding: Keep It Simple answers the breastfeeding questions parents ask most often. Furthermore, writing simple code is less error-prone.Breastfeeding: Keep It Simple. This includes increased readability, understandability, and changeability.
That sounds reasonable, if you happen to be a psychic.” - Refactoring To Patterns - Joshua Kerievsky.Another reason to create more complex code is to make optimizations. The reason that it's best to make a design more flexible or sophisticated today is to accommodate the needs of tomorrow. Some do this because they believe they know their system's future requirements.
Jackson)Simpler solutions yield more reliable software, i.e. Profile before optimizing), which make sense: to optimize only the code with performance problems. Another best practice is to follow the“Three rules of optimization”: (1. Pareto principle applies also in code: a program spends most of the time in a small portion of the code, so it will be wise to concentrate the effort to optimize only that part of the code.
36 programmers with varying experience conducted three different maintenance tasks and their performance was measured. Several metrics show that the improvements reduced complexity. In 4) a system was improved in two steps resulting in three variants of the same system. Nevertheless, there is some research. If the solution cannot be implemented quickly, it is not simple.Though hypotheses 2 and 3 are not true by definition but they can be regarded intuitively clear.
The following example shows that:Public String weekday1 ( int dayOfWeek ) Both methods do exactly the same thing. Sometimes it is difficult to tell what is simpler. Assuming cyclomatic complexity correctly depicts the complexity of a module, reliability should not the reason for applying KISS.Simplicity is a blurry, partly subjective measure. Several studies relating complexity metrics and post-release reliability show that module size in lines of code predicts reliability at least as good as the McCabe metric (also called cyclomatic complexity) 7). So complexity—although this normally relates the complexity of the problem and not to the complexity of the solution—is a known cost factor which may be accounted to maintenance.Lastly, hypothesis 4 is likely to be false. Several other studies support the correlation between complexity and maintainability 5).Furthermore, software cost estimation techniques are partly based on complexity judgments 6).
Furthermore in weekdays1 the relation between input and output can be seen directly and it's clear how it works by just seeing the method. The cyclomatic complexity) will therefore prefer weekday2.On the other hand weekdays1 uses less language features (just switch, return, and exceptions whereas weekdays2 needs if, arrays, arithmetic, return, and exceptions). Complexity metrics measuring these aspects (e.g. Weekday2 has less statements and less execution branches. Both versions may be seen as simpler than the other depending on the view taken. Just the implementation is different.
Eventually a human developer has to decide which solution to implement and the principles only give guidelines. But this ambiguity is not a problem since principles are not meant to be unambiguous and objective. Clearly this is not particularly difficult but these are aspects which are more difficult than in the other version of the method.So it's not objectively clear which of the two implementations KISS prefers without saying which complexity metric to apply. This is especially true for the range check at the beginning and the index computation in the return statement.
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