Safely evaluating arithmetic expressions in R?
安全评价中的算术表达式？
Infix notation is the conventional notation for arithmetic expressions.
中缀表示法是算术表达式的常规表示法。
I can't, frankly, keep arithmetic expressions and parenthetical nestings clear.
坦白地讲，我无法使算术表达式和括号嵌套保持清晰。
Regular expressions are constructed much like arithmetic expressions are created.
建构规则运算式的方式非常像是在建立算术运算式。
Operator precedence grammar is a powerful tool for handling arithmetic expressions.
算符优先文法是处理算术表达式的有力工具。
This article examined an applet that has the ability to evaluate arithmetic expressions step by step.
本文分析了一个applet，它能一步一步的对算术表达式求值。
The three most common forms of notation in arithmetic expressions are infix, prefix, and postfix notations.
算术表达式中最常见的表示法形式有中缀、前缀和后缀表示法。
IFD calc for Pocket PC is a calculator, that allows you to calculate basic and complicated arithmetic expressions.
通用计算器的掌上电脑是一个计算器，它可以让您的计算基本和复杂的算术运算。
Simple arithmetic expressions, including addition, subtraction, etc. , to enter an equal sign marks the end of the STL.
说明：用STL实现简单运算表达式，其中包括加减乘除等，以输入等号为结束标志。
Using what you have learned so far, you could now build a simple calculator to evaluate arithmetic expressions as shown in Listing 9.
使用迄今为止学到的东西，现在能够构建简单的计算器来计算算术表达式，如清单9所示。
The classic approach to writing code to evaluate arithmetic expressions was described by Donald Knuth in 1962 (see Resources). Knuth Outlines three steps.
编写代码对算术表达式求值的经典方法由DonaldKnuth描述于1962年(请参阅参考资料)。
In our arithmetic expressions we could have used inheritance to get from a unary to a binary operator node, but that would substantially violate the test.
在我们的四则运算表达式里面我们可以利用继承实行从一元到二元操作符的表示，但它实质上会干扰测试。
The conventional retrieval algorithm used directly the arithmetic expressions ig nores its retrieval operation features and has the low searching efficiency.
传统检索运算算法照搬算术表达式的算法，未考虑到检索运算的特点，因而其效率是不高的。
When using arithmetic expressions, it's also important to remember that, until version 7.2, Vim supported only integer arithmetic. A common mistake under earlier versions was writing something like.
在使用算术表达式时，还需要记住一点，在版本7.2之前，Vim只支持整数运算。
As an example we will write a small program to read and evaluate arithmetic expressions consisting of floating point Numbers, parentheses and the usual operators for addition, subtraction, and so on.
作为例子，我们将要写一个计算由浮点数、圆括号及一些常用的加、减等算术符号组成的算术表达式的程序。
As an example we will write a small program to read and evaluate arithmetic expressions consisting of floating point Numbers, parentheses and the usual operators for addition, subtraction, and so on.
例如我们要写一个计算由浮点数、圆括号及一些常用的加、减等算术符号组成的算术表达式的程序。
You can use arithmetic operators within your constant declarations as long as there are no mixed type expressions.
只要没有混合的类型表达式，就可以在常数说明中使用算术运算符。
As mentioned, expression nodes also support simple arithmetic and logical expressions.
如前面所述，表达式节点还支持简单的算术和逻辑表达式。
Expression nodes support simple expressions involving arithmetic and Boolean (true or false logic) operators.
表达式节点支持包含算术和布尔(真或假逻辑)运算符的简单表达式。
By establishing the mixed synchronous and asynchronous sampling arithmetic, the power measurement error expressions were deduced.
建立了混合同步采样、非同步采样中两种算法的数学模型，推导了功率测量误差的一般表达式。
Create expressions with number and date data by using arithmetic operators.
用算数运算符操作数字与时间数据来创建语句。
If both expressions are of arithmetic or enumeration types, the usual arithmetic conversions (covered in arithmetic conversions) are performed to convert them to a common type.
如果两个表达式类型不相同，但是都是算术或者是枚举类型。那么算术转换将他们转换成共同类型。
If both expressions are of arithmetic or enumeration types, the usual arithmetic conversions (covered in arithmetic conversions) are performed to convert them to a common type.
如果两个表达式类型不相同，但是都是算术或者是枚举类型。那么算术转换将他们转换成共同类型。
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