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Cargo cult programming

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Cargo cult programming

Cargo cult programming is a style of computer programming characterized by the ritual inclusion of code or program structures that serve no real purpose. Cargo cult programming is typically symptomatic of a programmer not understanding either a bug they were attempting to solve or the apparent solution (compare shotgun debugging, deep magic). The term cargo cult programmer may apply when an unskilled or novice computer programmer (or one inexperienced with the problem at hand) copies some program code from one place to another with little or no understanding of how it works or whether it is required in its new position.

Contents

Cargo cult programming can also refer to the results of applying a design pattern or coding style blindly without understanding the reasons behind that design principle. Examples are adding unnecessary comments to self-explanatory code, overzealous adherence to the conventions of a specific programming paradigm, or adding deletion code for objects that garbage collection would have collected automatically.

Origin

The term cargo cult, as an idiom, originally referred to aboriginal religions that grew up in the South Pacific after World War II. The practices of these groups centered on building elaborate mock-ups of airplanes and military landing strips in the hope of summoning the god-like airplanes that had brought marvelous cargo during the war. Use of the term in computer programming probably derives from Richard Feynman's characterization of certain practices as cargo cult science.

Cargo cult software engineering

A related term in software engineering is cargo cult software engineering, coined by Steve McConnell.

McConnell describes software development organizations that attempt to emulate more successful development houses, either by slavishly following a software development process without understanding the reasoning behind it, or by attempting to emulate a commitment-oriented development approach (in which software developers devote large amounts of time and energy toward seeing their projects succeed) by mandating the long hours and unpaid overtime, when in successful companies these are side-effects of high motivation and not requirements.

In both cases, McConnell contends that competence ultimately determines whether a project succeeds or fails, regardless of the development approach taken; furthermore, he claims that incompetent "impostor organizations" (which merely imitate the form of successful software development organizations) are in fact engaging in what he calls cargo cult software engineering.

References

Cargo cult programming Wikipedia


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