perform an operation on

基本解釋

Unary operators perform an operation on a single operand, such as returning the negative or positive value of a numeric expression.
一元運算符對單個操作數(shù)執(zhí)行操作，如返回數(shù)值表達式的負值或正值。
Essentially, type safety means that a program cannot perform an operation on an object unless that operation is valid for that object.
本質(zhì)上，類型安全性意味著，除非程序的操作對于類型是合法的，否則就無法在對象上執(zhí)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，遍歷數(shù)據(jù)存儲器，查找那些 name 鍵包含字符串 'Homework 1' 的對象，然后對這些對象中的每一個執(zhí)行操作。