Beginning programmers quickly discover that the textual representation of a number differs distinctly from a numeric variable on which programs can perform mathematical operations.
早期的程序员们很快发现了数字的文本表示与程序能在上面执行数学运算的数字变量显著不同。
This speedup is due to the fact that the array is a fixed size, not a variable-sized one like the default PHP one is, and that non-numeric indexes are not allowed.
造成这种速度优势的原因是数组是固定大小的，而默认的PHP 数组是可变大小的，并且不允许非数值型索引。
The value you specify with a parameter can be a free-form string, a number (including specialized numeric values, such as IP addresses), a Boolean value, a variable, or a list.
您指定的参数Value可以是自由格式的字符串、数字(包括特殊数值，如IP地址)、boolean值、变量或列表。
Expression that evaluates either a string containing the name of an environment variable, or an integer corresponding to the numeric order of an environment string in the environment-string table.
表达式，计算为包含环境变量名称的字符串，或对应于环境字符串表中环境字符串的数字顺序的整数。
The results showed that the restraint variable-dimension method not only could have high calculation accuracy and good numeric stability but also have certain data noise control capability.
识别结果表明，约束变尺度方法不仅具有较高的计算精度和良好的数值稳定性，并且具有一定的抑制数据噪音的能力。
A character value is being converted to numeric form for storage in a numeric column or variable.
一个字符被转换为数值形式来存储进数值字段或变量中。
As you can see, it's possible to perform a cast on a numeric value as well as on a variable.
正如您看到的那样，既可对一个数值进行造型处理，亦可对一个变量进行造型处理。
As you can see, it's possible to perform a cast on a numeric value as well as on a variable.
正如您看到的那样，既可对一个数值进行造型处理，亦可对一个变量进行造型处理。
应用推荐