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String s containing valid integer s will be cast to the integer type.
包含有合法整型值的字符串会被转换为整型。
Figure: Hierarchy of type objects representing the array data types. Not shown are the two integer types intp and uintp which just point to the integer type that holds a pointer for the the number types can be obtained using bit-width names as well.
To obtain the memory address of the string (useful to determine its actual identity and to see when two different strings refer to the same memory area), I've simply made a hard-coded typecast from the string type to the Integer type.
A surrogate key on a dimension requiring SCD support must be the Integer type.
需要 SCD 支持的维度的代理键必须是 Integer 类型。
The size of the Integer type varies depending on the CPU and operating system you are using.
整型类型的字节大小取决于你所使用的CPU和操作系统。
A subrange type defines a range of values within the range of another type (hence the name subrange). You can define a subrange of the Integer type, from 1 to 10 or from 100 to 1000, or you can define a subrange of the Char type, as in
For mathematical computation or generic code, your best bet is to stick with the standard integral representation for the specific platform - that is, use the Integer type - because this is what the CPU likes best.
The two different representations of the Integer type are not a problem, as long as your program doesn't make any assumptions about the size of integers. If you happen to save an Integer to a file using one version and retrieve it with another, though, you're going to have some trouble. In this situation, you should choose a platform-independent data type (such as LongInt or SmallInt).
The size of the Integer type varies depending on the CPU and operating system you are using. In 16-bit Windows, an Integer variable is two bytes wide. In 32-bit Windows, an Integer is four bytes wide. For this reason, when you recompile the Range example, you get a different output.
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