如前所述,每个查询表达式都是泛型的,以表示表达式计算的值的类型。
As I mentioned earlier, every query expression is generically typed to denote the type of the value the expression evaluates to.
抽象语法树是一个表示为对象集合的表达式。
An abstract syntax tree is an expression represented as a collection of objects.
错误消息中显示的原因码 “XUTY0008” 表示 “替换表达式的目标节点不是单一节点”。
The reason code "XUTY0008" shown in the error message quickly points you to the fact that "the target node of a replace expression is not a single node".
Again, for the math phobics in the room, don't panic, this is just writing down in words what we've already seen a couple of times already today, well today and last time.
在座的有数学恐惧症的同学不必惊慌,这仅仅是用数学表达式来表示,我们今天学到的一些知识点罢了,其实是这一讲和上一讲的知识点
You can now collect the whole expression as something something i plus something something j.
你们现在可以推导出完整的表达式,用 i 和 j 相关的式子来表示
They come from writing i prime and j prime in terms of i and j, then sticking it in an expression and identifying the new representation.
写出用 i 和 j 来表示 i' 和 j' 的式子,再代入分量的表达式,就能得到新的式子
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