infix (<)

Documentation for infix (<) assembled from the following types:

language documentation Sets, bags, and mixes

From Sets, bags, and mixes

(Sets, bags, and mixes) infix (<)

multi sub infix:<<(<)>>(Any $aAny $b --> Bool)
multi sub infix:<<(<)>>(Setty $aSetty $b --> Bool)

Subset of operator.

Returns True if $a is a strict subset of $b, i.e., that all the elements of $a are elements of $b but $a is a smaller set than $b.

say (123).Set (<) (321).Set;     # OUTPUT: «False␤» 
say (13).Set (<) (321).Set;        # OUTPUT: «True␤» 
say ∅ (<) (321).Set;                 # OUTPUT: «True␤»