GrowableBlockedArray Class
Array of contiguous doubles, indexed by block number and index within block.
- This is essentially a rectangular matrix (two dimensional array), with each block being a row of the matrix.
Extended by
- ClusterableArray
Methods
| Name | Description | |
|---|---|---|
| constructor(blockSize: number, initialBlocks: number = 8): GrowableBlockedArray | ||
| addBlock(newData: number[]): void | Add a new block of data. | |
| blockCapacity(): number | Return the capacity in blocks (not doubles) | |
| blockIndexToDoubleIndex(blockIndex: number): number Protected | convert a block index to the simple index to the underlying Float64Array. | |
| checkedComponent(blockIndex: number, componentIndex: number): number | undefined | Access a single double at offset within a block, with index checking and return undefined if indexing is invalid. | |
| clear(): void | clear the block count to zero, but maintain the allocated memory | |
| component(blockIndex: number, componentIndex: number): number | Access a single double at offset within a block. | |
| distanceBetweenBlocks(blockIndexA: number, blockIndexB: number): number | Return the distance (hypotenuse=sqrt(summed squares)) between indicated blocks | |
| distanceBetweenSubBlocks(blockIndexA: number, blockIndexB: number, iBegin: number, iEnd: number): number | Return the distance (hypotenuse=sqrt(summed squares)) between block entries iBegin <= i < iEnd of indicated blocks |
|
| ensureBlockCapacity(blockCapacity: number): void | ensure capacity (in blocks, not doubles) | |
| getWithinBlock(blockIndex: number, indexWithinBlock: number): number | Return a single value indexed within a block | |
| newBlockIndex(): number Protected | Return the starting index of a block of (zero-initialized) doubles at the end. | |
| popBlock(): void | reduce the block count by one. | |
| sortIndicesLexical(compareBlocks: BlockComparisonFunction = GrowableBlockedArray.compareLexicalBlock): Uint32Array | Return an array of block indices sorted per compareLexicalBlock function | |
| compareLexicalBlock(data: Float64Array, blockSize: number, ia: number, ib: number): number Static | compare two blocks in simple lexical order. |
Properties
| Name | Type | Description | |
|---|---|---|---|
| _blockSize Protected | number | number of numbers per block in the array. | |
| _data Protected | Float64Array | underlying contiguous, oversized buffer. | |
| _inUse Protected | number | Number of blocks (matrix rows) in use. | |
| numBlocks Accessor ReadOnly | number | computed property: length (in blocks, not doubles) | |
| numPerBlock Accessor ReadOnly | number | property: number of data values per block |
Defined in
Last Updated: 08 January, 2020