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Null(): Test for Empty List

empty = Null(l)
      int empty
      List<T> l

Specification: Returns 1 if l is the empty list and 0 else.

Complexity: O(1).


Wolfgang.Schreiner@risc.uni-linz.ac.at
Id: main.tex,v 1.10 1996/04/04 11:45:47 schreine Exp

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