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  1. :-subtract([1,2,3,4,5,nil],[1,4],L),write(L).
Success #stdin #stdout #stderr 0.04s 7136KB
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stdin
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Standard input is empty
stdout
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[2,3,5,nil]
stderr
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ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/S64mig
language:
Prolog (swi 7.6.4)
created:
4 days ago
visibility:
public

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