[ library(tentative) | Reference Manual | Alphabetic Index ]
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