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- Rule_of_three_(computer_programming) abstract "Rule of three is a code refactoring rule of thumb to decide when a replicated piece of code should be replaced by a new procedure. It states that the code can be copied once, but that when the same code is used three times, it should be extracted into a new procedure. The rule was introduced by Martin Fowler in Refactoring and attributed to Don Roberts.Duplication in programming is a bad practice because it makes the code harder to maintain. However, code refactoring to eliminate duplication also takes time, which might be better spent on other tasks. Triplication has an even higher cost because it makes maintenance harder yet. When the rule encoded in a replicated piece of code changes, whoever maintains the code will have to change it in all places correctly. This process is error-prone and often leads to problems. If the code exists in only one place, then it can be easily changed there. The rule proposes that the cost of maintenance certainly outweighs the cost of refactoring when there are three copies, and may or may not if there are two copies.As Charles Petzold puts it, \"Three or more? Use a for!\"".
- Rule_of_three_(computer_programming) wikiPageExternalLink wiki?DontRepeatYourself.
- Rule_of_three_(computer_programming) wikiPageExternalLink wiki?OnceAndOnlyOnce.
- Rule_of_three_(computer_programming) wikiPageID "15267164".
- Rule_of_three_(computer_programming) wikiPageLength "2185".
- Rule_of_three_(computer_programming) wikiPageOutDegree "10".
- Rule_of_three_(computer_programming) wikiPageRevisionID "700478357".
- Rule_of_three_(computer_programming) wikiPageWikiLink Category:Code_refactoring.
- Rule_of_three_(computer_programming) wikiPageWikiLink Category:Programming_rules_of_thumb.
- Rule_of_three_(computer_programming) wikiPageWikiLink Charles_Petzold.
- Rule_of_three_(computer_programming) wikiPageWikiLink Code_refactoring.
- Rule_of_three_(computer_programming) wikiPageWikiLink Copy_and_paste_programming.
- Rule_of_three_(computer_programming) wikiPageWikiLink Dont_repeat_yourself.
- Rule_of_three_(computer_programming) wikiPageWikiLink For_loop.
- Rule_of_three_(computer_programming) wikiPageWikiLink Martin_Fowler.
- Rule_of_three_(computer_programming) wikiPageWikiLink Rule_of_three_(C++_programming).
- Rule_of_three_(computer_programming) wikiPageWikiLink Rule_of_thumb.
- Rule_of_three_(computer_programming) wikiPageWikiLinkText "Rule of three (computer programming)".
- Rule_of_three_(computer_programming) wikiPageUsesTemplate Template:Dablink.
- Rule_of_three_(computer_programming) subject Category:Code_refactoring.
- Rule_of_three_(computer_programming) subject Category:Programming_rules_of_thumb.
- Rule_of_three_(computer_programming) hypernym Code.
- Rule_of_three_(computer_programming) type Film.
- Rule_of_three_(computer_programming) type Philosophy.
- Rule_of_three_(computer_programming) comment "Rule of three is a code refactoring rule of thumb to decide when a replicated piece of code should be replaced by a new procedure. It states that the code can be copied once, but that when the same code is used three times, it should be extracted into a new procedure. The rule was introduced by Martin Fowler in Refactoring and attributed to Don Roberts.Duplication in programming is a bad practice because it makes the code harder to maintain.".
- Rule_of_three_(computer_programming) label "Rule of three (computer programming)".
- Rule_of_three_(computer_programming) sameAs Q7378984.
- Rule_of_three_(computer_programming) sameAs m.03hnmxr.
- Rule_of_three_(computer_programming) sameAs Правило_трьох_(інформатика).
- Rule_of_three_(computer_programming) sameAs Q7378984.
- Rule_of_three_(computer_programming) sameAs 三次法则_(程序设计).
- Rule_of_three_(computer_programming) wasDerivedFrom Rule_of_three_(computer_programming)?oldid=700478357.
- Rule_of_three_(computer_programming) isPrimaryTopicOf Rule_of_three_(computer_programming).