Description
Returns the union of the set a with {x}
.
adjoin
complains if a is not a literal set.
adjoin(x, a)
and union(set(x), a)
are equivalent;
however, adjoin
may be somewhat faster than union
.
See also .
Examples:
(%i1) adjoin (c, {a, b});
(%o1) {a, b, c}
(%i2) adjoin (a, {a, b});
(%o2) {a, b}