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# vs_element(+VS, +I, -X)

Get an element of a varset by index

VS
  A varset
I
  A positive integer
X
  A variable (output)

## Description

Get the Ith element of a varset. I must be between 1 and the size of the set.

### Modes and Determinism

- vs_element(+, +, -) is det

## Examples

        ?- Vars=[A,B,C], tent_set_all(Vars, 99), vs_create(Vars, VS), vs_element(VS, 3, X).
        VS = ...
        X = C
        Yes (0.00s cpu)

## See Also

vs_create / 2, vs_size / 2