WhoCites Definitions list 1 Sections StandardLIB Doc
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Who Cites length?
lengthDef ||as|| == Case of as; nil  0 ; a.as'  ||as'||+1  (recursive)
Thm* A:Type, l:A List. ||l||  
Thm* ||nil||  

Syntax:||as|| has structure: length(as)

About:
listnillist_indintnatural_number
addrecursive_def_noticeuniversememberall!abstraction
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WhoCites Definitions list 1 Sections StandardLIB Doc