表达式树

你也能将表达式树中的数据转换到其他的域的数据形式（如XML）。

You can also convert the data in the expression tree into another domain ( such as XML ) .

数学表达式树和DOM之间的转换研究与实现

The Research and Implementation of Conversion between Expression Tree and DOM

在这个代码示例中，e不是一个可调用委托，而是表达式树。

In this code sample , e is not a callable delegate . Rather , it 's an expression tree .

IBMJIT编译器使用一个表达式树序列表示方法的操作。

The IBM JIT compiler uses a sequence of expression trees to represent the method 's operations .

它会评估表达式树，如果合适，就用一个索引查找（IndexLookup）替代for-each循环。

I4o evaluates the expression tree and , if appropriate , replaces the for-each loops with an index lookup .

他在那篇文章里用了非常好的图表来表现说明一些Lambda树的表达式树表示形式。

He has a great diagram there showing the expression tree representation of a few lambda expressions .

在Clojure中，所有代码均是存储为s表达式树的数据。

In Clojure , all code is also data that happens to be stored as trees of s-expressions .

他举出了大量的例子告诉你如何巧妙地处理那些表达式树和编译你的带自定义条件的lambda表达式。

He has a great example of how you can manipulate the expression trees and build custom conditions in your lambda expressions .

表达式树与Lambda表达式相关联，Lambda表达式是可在行内实现预期代理和匿名代理的内容的一种方式。

Expression trees are related to lambda expressions , which are the logical next step in the line of delegates and anonymous delegates .

IanGriffiths在他关于表达式树文章中，给出了一个非常不错的Lambda表达式介绍，以及Lambda与表达式树的关系。

In his article on expression trees Ian Griffiths gives a great introduction to lambda expressions and their relation to expression trees .

JomoFisher演示了一个使用访问者模式代码，这段代码通过创建一个新树来替换特定的节点，而不是浏览整个表达式树。

Jomo Fisher demonstrates a visitor pattern than will walk an expression tree , creating a new tree while swapping out specific nodes .

因此，当你生成一个带IQueryable类型查询的时候，编译器将生成一个表达式树而不是Lambda表达式。

Therefore , when you issue a query over a type that is queryable , the compiler will generate an expression tree rather than a lambda expression .

没有表达式树的话，我们是不可能用描述格式来表示一个表达式的。他们唯一的表示方式是IL（中间语言），这种语言对于重新表述用户的意图来说太低层次了。

Without expression trees , its impossible to describe expressions in a descriptive format ; the only description of them is IL , which is too low level to re-create the user 's intent for the expression .

表达式树是lambda表达式的一种数据表示形式，它能使你更方便地读取和推断Lambda表达式。

An expression tree is a data representation of the lambda expression in a form that is easy for you to read and reason about the lambda expression in .

在C3.0和VB9.0大部分新特性中，表达式树在“LINQ，尤其是LINQtoSQL”中扮演了一个非常重要的角色

As almost all of the new features in C # 3.0 and VB9.0 expression trees play a key role in " LINQ , and particularly in LINQ to SQL "

在完成更改后，他们只需简单地调用ToExpression方法再次得到一个可用的表达式树即可。

When done making changes , they simply need to call ToExpression to get a usable expression tree again .

CriteriaQuery在运行时被构建为一个强类型查询表达式树，本文通过一系列例子展示了它的用法。

A CriteriaQuery is constructed at run time as a tree of strongly typed query expressions whose use the article has illustrated with a series of code examples .

如下是一些可能比较有趣的表达式树的用法

Here are some uses of expression trees that may be interesting

表达式树在任何语言中都是一个强大的功能。

Expression trees are a powerful feature in any language .

开发人员如果想编辑表达式树，那么不得不通过拷贝现有的一个（表达式树）来手动的创建一个新的。

Developers wishing to edit one have to manually build new expressions by copying existing ones .

推断表达式树内数据，并对它做自定义处理。

Reason about the data in the expression tree , and do custom processing over it .

为了更好的支持类似查询推理和函数结构的功能，表达式树被设计为不可变的。

In order to better support things like query comprehension and function composition , expression trees are immutable .

基于扩展的装入延时体系结构模型，提出了在代码生成过程中针对表达式树的森林的局部寄存器分配和局部指令调度的集成算法。

This paper presents an integrated instruction scheduling and register allocation algorithm for processors with an extended delayed-load architecture .

参考程序计算表达式树的值的算法。参考答案：请您填一下这张登记表好吗？

Refer program # 2 for evaluation of an Expression Tree . Could you fill in this form , please ?

函数库被保证，一旦这些函数库引用了一个表达式树后，表达式树就不再改变。

Libraries are guaranteed that once they have a reference to an expression tree , that expression tree will never change .

用.Compile（）方法去将一个表达式树转换为一个委托，然后你可以执行它。

Use the . Compile () method to turn the expression tree into a delegate so that you can execute it .

另一种可能是传入一段源代码并返回一颗表达式树，而不是一个编译好的程序集。

One proposed option would be passing in some source code and being returned an expression tree instead of just a compiled assembly .

通过这样的设定，所有错误类型都会被消除，然而这使要编辑表达式树变得有点困难。

Whole classes of bugs are eliminated by doing this , though it does make modified versions of an expression tree somewhat difficult .

然后，表达式树对一个表达式提供了一个高级的树表示方式来表现表达式，这样你就能很容易地理解用户的该表达式的意图。

Rather , expression trees provide a high level tree representation of an expression , so that you can easily understand the user 's intent for the expression .

介绍和分析了现有的两种主要规则匹配算法：布尔表达式树和有向无环控制流图，提出了一种快速规则匹配算法。

Two kind of common matching algorithms are introduced and analysed at first : Boolean expression tree and directed acyclic control flow graph ( CFG ), and then a better one is put forward .