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(>=), infix ⊇
Combined from primary sources listed below.

In Sets, bags, and mixes§

See primary documentation in context for infix (>=), infix ⊇.

Returns True if $a is a superset of or equal to $b, else False. More information, Wikipedia definition.

In Operators§

See primary documentation in context for infix (>=), infix ⊇. 

multi infix:«(>=)»($a,$b --> Bool:D)

Superset of or equal to operator.

Returns True if $a is a superset of $b, i.e., that all the elements of $b are elements of $a but $a is a larger or equal sized set than $b.

say (1,2,3) (>=) (2,3,1); # OUTPUT: «True␤»
say (1,2,3) (>=) (2,3);   # OUTPUT: «True␤»
say 4 ⊇ (1,2,3);          # OUTPUT: «False␤»