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A reference is an abstract data type and may be implemented in many ways. Typically, a reference refers to data stored in memory on a given system, and its internal value is the memory address of the data, i.e. a reference is implemented as a pointer. For this reason a reference is often said to "point to" the data.
Circular references also occur in spreadsheets when two cells require each other's result. For example, if the value in Cell A1 is to be obtained by adding 5 to the value in Cell B1, and the value in Cell B1 is to be obtained by adding 3 to the value in Cell A1, no values can be computed.
Word, which means a segment can only be located at an address that is a multiple of two, starting from address 0H. […] Paragraph, which means a segment can only be located at an address that is a multiple of 16, starting from address 0. […] Page, which means a segment can only be located at an address that is a multiple of 256, starting ...
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This page was last edited on 24 November 2011, at 13:36 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
Some languages assist this task by offering constructs to handle the initializedness of variables; for example, C# has a special flavour of call-by-reference parameters to subroutines (specified as out instead of the usual ref), asserting that the variable is allowed to be uninitialized on entry but will be initialized afterwards.