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fail

Does not succeed. A synonym of false/0.

Description

Does not succeed.

Modes and Determinism

Fail Conditions

Always fails

Examples

Success:
      [eclipse]: [user].
       not1(Goal) :- call(Goal),!,fail.
       not1(_).
       user compiled 208 bytes in 0.02 seconds
      [eclipse]: not1(true).
      no.
      [eclipse]: not1(fail).
      yes.

Fail:
     fail.

See Also

true / 0, false / 0