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"true" vs "yes"

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bandwand

bandwand

Technical User
Oct 17, 2009
1
US
When does prolog answer "yes" and when does it answer "true" and does the difference matter?
 
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I think it depends of dialects you use.
Gnu-Prolog
Code: 
| ?- 4 is 1 + 3.
yes

SWI-Prolog
Code: 
1 ?- 4 is 1 + 3.
true

2 ?-



 
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