Filters take standard input and perform an operation upon it and send the results to standard output.
过滤器从标准输入处获得处理内容，然后操作得到的内容，将处理后的结果送到标准输出。
Essentially, type safety means that a program cannot perform an operation on an object unless that operation is valid for that object.
本质上，类型安全性意味着，除非程序的操作对于类型是合法的，否则就无法在对象上执行操作。
Most applications have custom logic that authorizes users to perform an operation not only on a class, but also on an instance of that class.
大多数应用程序都有定制逻辑，它授权用户不仅仅在类上执行操作，而且还在该类的实例上执行操作。
Finally, we look through the datastore for objects whose name key contains the string 'Homework 1' and perform an operation on each of those objects.
最后，遍历数据存储器，查找那些name键包含字符串'Homework1 '的对象，然后对这些对象中的每一个执行操作。
At appropriate places throughout the code, the programmer writes program logic to test whether the current user is authorized to perform an operation.
在整个代码中的适当地方，程序员编写程序逻辑来测试当前用户是否有权执行某个操作。
An application attempted to perform an operation on a file to which the Standard User role does not have permissions.
应用程序尝试对“标准使用者”角色没有权限的档案执行作业。
Unary operators perform an operation on a single operand, such as returning the negative or positive value of a numeric expression.
一元运算符对单个操作数执行操作，如返回数值表达式的负值或正值。
The process of planning, writing, testing, and correcting the steps required for a computer to solve a problem or perform an operation.
为计算机解决某个问题或完成某种操作所需的规划、编程、检验及修正等步骤的处理方法。
Although you can have an add-in task perform an operation and quit, typically add-in tasks are used for operations that need to be performed periodically.
尽管可以让插件任务(add - in task)执行某一项操作并退出，但插件任务通常用于需要定期执行的操作。
This enables you to perform an operation for each object in the partition that you are interested in and return a collection of results back to the client.
这允许您对感兴趣的分区中的每个对象执行一项操作，并向客户机返回结果集。
Page design has two major goals: to bring together all the functionality needed to perform an operation and to present all the information necessary to make that operation easy and intuitive.
页面设计有两个主要目的：将执行操作所需的功能全部整合在一起，并且呈现能使该操作简单直观所需的所有信息。
Page design has two major goals: to bring together all the functionality needed to perform an operation and to present all the information necessary to make that operation easy and intuitive.
页面设计有两个主要目的：将执行操作所需的功能全部整合在一起，并且呈现能使该操作简单直观所需的所有信息。
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