`|` (union) operator

The left-associative, binary infix | operator is used to compute the union of two operands.

Usage

Union on values:

void m(Set<Integer> odds, Set<Integer> evens) {
    Set<Integer> ints = odds | evens;
}

Note: The | operator is also commonly used to union types. This page is about using the | operator on values.

The | operator is defined as follows:

lhs.union(rhs)

See the language specification for more details.

The | operator is polymorphic. The meaning of | depends on the Set interface

The result type of the | operator is a Set whose element type is the union of the element types of its operands.