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Text File  |  1988-10-28  |  735b  |  26 lines
  1.  
  2. <H1><A ID="SECTION001420000000000000000">
  3. Defining structure types</A>
  4. </H1>
  5.  
  6. <P>
  7. The <#12015#><TT>DEFINE-STRUCTURE-TYPE</TT><#12015#> macro is a convenient way to define a new structure type and its
  8. associated constructor, predicator, and component selectors.
  9. <#12016#><TT>DEFINE-STRUCTURE-TYPE</TT><#12016#> is a macro defined in terms of <#12017#><TT>MAKE-STYPE</TT><#12017#> and
  10. the other low-level routines described in the next section.  One may
  11. want to define one's own interface to these routines, one that
  12. initializes the components when a new instance is constructed, for
  13. example.
  14.  
  15. <P>
  16. <A ID="12202"><tex2html_anchor_invisible_mark></A>
  17. <#12233#><#12233#>
  18. Special form
  19.  
  20. <P>
  21. <BR>
  22. <tex2html_image_mark>#inset12021#
  23. <BR> 
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  25. <P>
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