Documentation for infix (|), infix ∪ assembled from the following pages:
Language documentation: Operators §
From Operators
(Operators) infix (|), infix ∪ §
multi sub infix:<(|)>(**)'|' as in left hand side arguments 'or' right hand side arguments.
Returns the union of all of its arguments. This creates a new Set that contains all the elements its arguments contain if none of the arguments are a Bag, BagHash, Mix or MixHash.
say <a b d> ∪ bag(<a a b c>); # OUTPUT: «Bag(a(2) b c d)» If any of the arguments are Baggy or Mixy, the result is a new Bag (or Mix) containing all the elements, each weighted by the highest weight that appeared for that element.
say <a b d> ∪ bag(<a a b c>); # OUTPUT: «Bag(a(2) b c d)» Language documentation: Sets, bags, and mixes §
(Sets, bags, and mixes) infix (|), infix ∪ §
Returns the union of all its arguments. More information, Wikipedia definition.