Once and only once (once and only once, referred to as oaoo) object-oriented programming is a basic principle, also known as "a rule, to achieve a" (one rule, one place). Means by (someone to write rather than machine-generated code) and the test posed by the system must be able to express the content to be expressed, but can not contain any duplicate code.
Its origins have not test, is generally believed that because the method of Extreme Programming Kent Beck, one of the founders and the publicity it summarizes well known. |
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