This document gives actual examples of code smells -- characteristics of code that are not bugs, but may indicate an underlying problem in the implementation. It is based on the code smell list compiled at Coding Horror.

A brief summary of the code smell, described in plain language with a reason why it indicate a problem.

if( example == "good" )
{
  //do nothing
}

• Combinatorial Explosion
• Comments
• Conditional Complexity
• Data Class
• Dead Code
• Divergent Change
• Duplicated Code
• Feature Envy
• Inconsistent Names
• Large Class
• Oddball Solution
• Parallel Inheritance Hierarchies
• Refused Bequest
• Shotgun Surgery
• Speculative Generality
• Temporary Field
• Type Embedded