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    <p>While I do understand the complaints of many people regarding default parameters and overloads, there seems to be a lack of understanding to the benefits that these features provide.</p> <p><strong>Default Parameter Values:</strong><br> First I want to point out that upon initial design of a project, there should be little to no use for defaults if well designed. However, where defaults' greatest assets comes into play is with existing projects and well established APIs. I work on projects that consist of millions of existing lines of code and do not have the luxury to re-code them all. So when you wish to add a new feature which requires an extra parameter; a default is needed for the new parameter. Otherwise you will break everyone that uses your project. Which would be fine with me personally, but I doubt your company or users of your product/API would appreciate having to re-code their projects on every update. <strong>Simply, Defaults are great for backwards compatibility!</strong> This is usually the reason you will see defaults in big APIs or existing projects.</p> <p><strong>Function Overrides:</strong> The benefit of function overrides is that they allow for the sharing of a functionality concept, but with with different options/parameters. However, many times I see function overrides lazily used to provide starkly different functionality, with just slightly different parameters. In this case they should each have separately named functions, pertaining to their specific functionality (As with the OP's example).</p> <p>These, features of c/c++ are good and work well when used properly. Which can be said of most any programming feature. It is when they are abused/misused that they cause problems.</p> <p><strong>Disclaimer:</strong><br> I know that this question is a few years old, but since these answers came up in my search results today (2012), I felt this needed further addressing for future readers.</p>
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    1. POOptional function parameters: Use default arguments (NULL) or overload the function?
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