Is Set
Boolean predicate. Evaluates `checkExpr`; returns true when the result is non-undefined and non-empty (non-empty string, non-empty list). Used as the condition of a When node.
- Subclass Of
Expression
Boolean predicate. Evaluates `checkExpr`; returns true when the result is non-undefined and non-empty (non-empty string, non-empty list). Used as the condition of a When node.
Expression