Raku Books / Perl 6 at a Glance / Operators / Junction operators
|, &, ^
|, &, and ^ create the
so-called junctions (formerly known in Perl 6 as quantum
superpositions). These objects can be used where a scalar is used but
behave differently; unlike the scalars, the junctions have multiple
values at the same moment in time.
The |, &, and ^ operators
create, respectively, the junctions of the any,
all, and one types.
# The value of 4 is one of the listed options
say "ok" if 4 == 1|2|3|4|5;
# There is no 4 in the list
say "ok" if 4 != 1 & 2 & 3 & 5;
# 4 repeats twice, thus it is not unique
say "ok" unless 4 == 1 ^ 2 ^ 2 ^ 4 ^ 4 ^ 5;