HasIterator

Collect CollectUnique Each FindByName UniqueName

Attributes

FirstNonNil

Fields

Define Class HasIterator;
    mixes in with Object;

    // iterator
    operation Each(function: EachFunction; parameters: Pointer): Object, noFail, noMethod;
    operation Collect(collection: ObjectList; function: EachFunction; parameters: Pointer), noFail;
    operation CollectUnique(collection: ObjectList; function: EachFunction; parameters: Pointer), noFail;

    attribute FirstNonNil: Object, readOnly;
        // returns first object by calling Each
        // rarely override

    // string matching
    operation FindByName(name: HasText): Object, noFail;
    operation UniqueName(name: HasText): Boolean, noFail;
end class;