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vs_size(+VS, -N)

Get the size of a varset
VS
A varset
N
An integer (output)

Description

Get the size (number of elements) of a varset.

Modes and Determinism

Examples

    ?- Vars=[A,B,C], vs_create(Vars, VS), vs_size(VS, N).
    VS = ...
    N = 3
    Yes (0.00s cpu)
    

See Also

vs_create / 2, vs_element / 3