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//
Combined from primary sources listed below.

In Operators§

See primary documentation in context for prefix // 

multi prefix:<//>(Any --> Bool:D)

Boolean context operator.

Available as of 6.e language version (early implementation exists in Rakudo compiler 2022.12+).

Coerces the argument to Boolean by calling the defined method on it.

In Operators§

See primary documentation in context for infix //

The defined-or operator or infix // returns the first defined operand, or else the last operand. Short-circuits.

say Any // 0 // 42;         # OUTPUT: «0␤»