The purpose of a functional map is to receive one or more input objects and generate a single output object.

功能性映射的用途是接收一个或多个输入对象并生成单一输出对象。

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The purpose of query tuning is to provide the best possible input to the optimizer so that the optimizer can choose the best access path.

性能调优的目的是尽可能为优化器提供最好的输入，以便优化器能选择最好的访问路径。

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And its purpose in life is to maybe take input and maybe produce output.

它的唯一目的是可能是获得输入,可能是输出东西。

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And its purpose in life is to maybe take input and maybe produce output.

它的唯一目的是可能是获得输入,可能是输出东西。

哈佛公开课 - 计算机科学课程节选

So we'll talk a bit more about this idea of functions today, but, get int, again, can think of it as a black box, whose purpose in life is to prompt the human for input and pester the human if he or she doesn't actually give it int, but then once it has that, has entered it from the user, it's quote unquote, returns it to you.

所以我们进今天将多讨论点这个函数的概念，但是，GetInt，我们可以把它当做一个黑盒子，它的唯一目的是提示人们来输入,并且如果他或她没有,给它int数，则会纠缠用户，但是一旦它得到了，用户输入的int数，对输入进行引用，返回给你。

哈佛公开课 - 计算机科学课程节选

Our keys to helping someone truly know himself or herself is contained in four strands of input: profession, passion, purpose and place.

FORBES: Reinvention: The American Way

That means the entire program and purpose is Delegate-driven and determined and constantly adjusting to Delegate input.

FORBES: Opportunity Collaboration: A New Kind of Business Retreat to Tackle Global Poverty