API Reference > geometry-core > ArraysAndInterfaces > GrowableBlockedArray > getWithinBlock getWithinBlock Method Return a single value indexed within a block getWithinBlock(blockIndex: number, indexWithinBlock: number): number Parameter Type Description blockIndex number index of block to read indexWithinBlock number Returns - number Defined in core/geometry/src/geometry3d/GrowableBlockedArray.ts Line 43 Last Updated: 15 June, 2021