API Reference > geometry-core > ArraysAndInterfaces > IndexedCollectionInterval > advanceToHead advanceToHead Method Advance this.begin to (other.begin), i.e. catch the first member of other. advanceToHead(other: IndexedCollectionInterval<T extends CollectionWithLength>): boolean Parameter Type Description other IndexedCollectionInterval<T extends CollectionWithLength> Returns - boolean Defined in core/geometry/src/geometry3d/IndexedCollectionInterval.ts Line 88 Last Updated: 15 June, 2021