How to use ListCache method in ladle

Best JavaScript code snippet using ladle

dynamic-size-list.ts

Source:dynamic-size-list.ts

1import throwError from '@element-plus/utils/error'2import createList from '../builders/buildList'3import { isHorizontal } from '../utils'4import {5  AUTO_ALIGNMENT,6  CENTERED_ALIGNMENT,7  DEFAULT_DYNAMIC_LIST_ITEM_SIZE,8  DefaultListProps,9  END_ALIGNMENT,10  SMART_ALIGNMENT,11  START_ALIGNMENT,12} from '../defaults'13import type { ListCache, ListItem, ItemSize } from '../types'14import type { ExtractPropTypes } from 'vue'15type Props = ExtractPropTypes<typeof DefaultListProps>16const SCOPE = 'ElDynamicSizeList'17const getItemFromCache = (18  props: Props,19  index: number,20  listCache: ListCache,21): ListItem => {22  const { itemSize } = props23  const { items, lastVisitedIndex } = listCache24  if (index > lastVisitedIndex) {25    let offset = 026    if (lastVisitedIndex >= 0) {27      const item = items[lastVisitedIndex]28      offset = item.offset + item.size29    }30    for (let i = lastVisitedIndex + 1; i <= index; i++) {31      const size = (itemSize as ItemSize)(i)32      items[i] = {33        offset,34        size,35      }36      offset += size37    }38    listCache.lastVisitedIndex = index39  }40  return items[index]41}42const findItem = (43  props: Props,44  listCache: ListCache,45  offset: number,46) => {47  const { items, lastVisitedIndex } = listCache48  const lastVisitedOffset =49    lastVisitedIndex > 0 ? items[lastVisitedIndex].offset : 050  if (lastVisitedOffset >= offset) {51    return bs(52      props,53      listCache,54      0,55      lastVisitedIndex,56      offset,57    )58  }59  return es(60    props,61    listCache,62    Math.max(0, lastVisitedIndex),63    offset,64  )65}66// bs stands for binary search which has approximately time complexity of O(Log n)67// space complexity of O(1)68// in this case we use it for search the offset of each item, since69// the cached items' offset is monotonically increasing70const bs = (71  props: Props,72  listCache: ListCache,73  low: number,74  high: number,75  offset: number,76) => {77  while (low <= high) {78    const mid = low + Math.floor((high - low) / 2)79    const currentOffset = getItemFromCache(props, mid, listCache).offset80    if (currentOffset === offset) {81      return mid82    } else if (currentOffset < offset) {83      low = mid + 184    } else if (currentOffset > offset) {85      high = mid - 186    }87  }88  return Math.max(0, low - 1)89}90// es stands for exponential search which has time complexity of O(Log n) and91// space complexity of O(1) in the case of finding the boundary element.92// the exponential indicator in this case is 2.93// for more detail about exponential search click this link94// https://www.freecodecamp.org/news/search-algorithms-exponential-search-explained/95const es = (96  props: Props,97  listCache: ListCache,98  index: number,99  offset: number,100) => {101  const { total } = props102  let exponent = 1103  while (104    index < total &&105    getItemFromCache(props, index, listCache).offset < offset106  ) {107    index += exponent108    exponent *= 2109  }110  return bs(111    props,112    listCache,113    Math.floor(index / 2),114    Math.min(index, total - 1),115    offset,116  )117}118const getEstimatedTotalSize = (119  { total }: Props,120  { items, estimatedItemSize, lastVisitedIndex }: ListCache,121) => {122  let totalSizeOfMeasuredItems = 0123  if (lastVisitedIndex >= total) {124    lastVisitedIndex = total - 1125  }126  if (lastVisitedIndex >= 0) {127    const item = items[lastVisitedIndex]128    totalSizeOfMeasuredItems = item.offset + item.size129  }130  const numUnmeasuredItems = total - lastVisitedIndex - 1131  const totalSizeOfUnmeasuredItems = numUnmeasuredItems * estimatedItemSize132  return totalSizeOfMeasuredItems + totalSizeOfUnmeasuredItems133}134const DynamicSizeList = createList({135  name: 'ElDynamicSizeList',136  getItemOffset: (137    props,138    index,139    listCache,140  ) => getItemFromCache(props, index, listCache).offset,141  getItemSize: (142    _,143    index,144    { items },145  )=> items[index].size,146  getEstimatedTotalSize,147  getOffset: (148    props,149    index,150    alignment,151    scrollOffset,152    listCache,153  ) => {154    const { height, layout, width } = props155    const size = (isHorizontal(layout) ? width : height) as number156    const item = getItemFromCache(props, index, listCache)157    const estimatedTotalSize = getEstimatedTotalSize(props, listCache)158    const maxOffset = Math.max(159      0,160      Math.min(estimatedTotalSize - size, item.offset),161    )162    const minOffset = Math.max(163      0,164      item.offset - size + item.size,165    )166    if (alignment === SMART_ALIGNMENT) {167      if (168        scrollOffset >= minOffset - size &&169        scrollOffset <= maxOffset + size170      ) {171        alignment = AUTO_ALIGNMENT172      } else {173        alignment = CENTERED_ALIGNMENT174      }175    }176    switch (alignment) {177      case START_ALIGNMENT: {178        return maxOffset179      }180      case END_ALIGNMENT: {181        return minOffset182      }183      case CENTERED_ALIGNMENT: {184        return Math.round(minOffset + (maxOffset - minOffset) / 2)185      }186      case AUTO_ALIGNMENT:187      default: {188        if (scrollOffset >= minOffset && scrollOffset <= maxOffset) {189          return scrollOffset190        } else if (scrollOffset < minOffset) {191          return minOffset192        } else {193          return maxOffset194        }195      }196    }197  },198  getStartIndexForOffset: (199    props,200    offset,201    listCache,202  ) => findItem(props, listCache, offset),203  getStopIndexForStartIndex: (204    props,205    startIndex,206    scrollOffset,207    listCache,208  ) => {209    const { height, total, layout, width } = props210    const size = (isHorizontal(layout) ? width : height) as number211    const item = getItemFromCache(props, startIndex, listCache)212    const maxOffset = scrollOffset + size213    let offset = item.offset + item.size214    let stopIndex = startIndex215    while (stopIndex < total - 1 && offset < maxOffset) {216      stopIndex++217      offset += getItemFromCache(props, stopIndex, listCache).size218    }219    return stopIndex220  },221  initCache({ estimatedItemSize = DEFAULT_DYNAMIC_LIST_ITEM_SIZE }, instance) {222    const cache = {223      items: {},224      estimatedItemSize,225      lastVisitedIndex: -1,226    } as ListCache227    cache.clearCacheAfterIndex = (index: number,228      forceUpdate = true) => {229      cache.lastVisitedIndex = Math.min(230        cache.lastVisitedIndex,231        index - 1,232      )233      instance.exposed.getItemStyleCache(-1)234      if (forceUpdate) {235        instance.proxy.$forceUpdate()236      }237    }238    return cache239  },240  clearCache: false,241  validateProps: ({ itemSize }) => {242    if (process.env.NODE_ENV !== 'production') {243      if (typeof itemSize !== 'function') {244        throwError(SCOPE, `245          itemSize is required as function, but the given value was ${typeof itemSize}246        `)247      }248    }249  },250})...

_ListCache.js

Source:_ListCache.js

...9 * @private10 * @constructor11 * @param {Array} [entries] The key-value pairs to cache.12 */13function ListCache(entries) {14  var index = -1,15      length = entries ? entries.length : 0;16  this.clear();17  while (++index < length) {18    var entry = entries[index];19    this.set(entry[0], entry[1]);20  }21}22// Add methods to `ListCache`.23ListCache.prototype.clear = listCacheClear;24ListCache.prototype['delete'] = listCacheDelete;25ListCache.prototype.get = listCacheGet;26ListCache.prototype.has = listCacheHas;27ListCache.prototype.set = listCacheSet;...

Using AI Code Generation

1var ladle = require('ladle');2var ListCache = ladle.ListCache;3var cache = new ListCache();4cache.put('foo', 'bar');5cache.put('baz', 'quux');6console.log(cache.get('foo'));7console.log(cache.get('baz'));8put(key, value)9get(key)10var ladle = require('ladle');11var ListCache = ladle.ListCache;12var cache = new ListCache();13cache.put('foo', 'bar');14cache.put('baz', 'quux');15console.log(cache.get('foo'));16console.log(cache.get('baz'));17put(key, value)18get(key)

Using AI Code Generation

1var ladle = require('ladle');2var ListCache = ladle.ListCache;3var list = new ListCache();4list.set('foo', 'bar');5console.log(list.get('foo'));6var ladle = require('ladle');7var MapCache = ladle.MapCache;8var map = new MapCache();9map.set('foo', 'bar');10console.log(map.get('foo'));11var ladle = require('ladle');12var SetCache = ladle.SetCache;13var set = new SetCache();14set.set('foo');15console.log(set.has('foo'));16var ladle = require('ladle');17var Stack = ladle.Stack;18var stack = new Stack();19stack.push('foo');20console.log(stack.pop());21var ladle = require('ladle');22var baseIndexOf = ladle.baseIndexOf;23var array = [1, 2, 3];24console.log(baseIndexOf(array, 2));25var ladle = require('ladle');26var baseIsEqual = ladle.baseIsEqual;27var object = { 'a': 1 };28var other = { 'a': 1 };29console.log(baseIsEqual(object, other));30var ladle = require('ladle');31var baseIsEqualDeep = ladle.baseIsEqualDeep;32var object = { 'a': 1 };33var other = { 'a': 1 };34console.log(baseIsEqualDeep(object, other));35var ladle = require('ladle');36var baseIsMatch = ladle.baseIsMatch;37var object = { 'a': 1 };38var source = { 'a': 1 };39console.log(baseIsMatch(object, source));40var ladle = require('ladle');41var baseKeys = ladle.baseKeys;

Using AI Code Generation

1var ladle = require('ladle');2var listCache = new ladle.ListCache();3listCache.add('item1');4listCache.add('item2');5listCache.add('item3');6var items = listCache.getAll();7var count = listCache.getCount();8var item = listCache.get(1);9listCache.remove(1);10listCache.clear();11var isEmpty = listCache.isEmpty();12var contains = listCache.contains('item1');13var contains = listCache.contains('item1', function(item1, item2) {14    return item1 === item2;15});16var index = listCache.indexOf('item1');17var index = listCache.indexOf('item1', function(item1, item2) {18    return item1 === item2;19});20var firstItem = listCache.first();21var lastItem = listCache.last();22var nextItem = listCache.next();23var previousItem = listCache.previous();24var currentItem = listCache.current();25var currentIndex = listCache.currentIndex();26var firstItem = listCache.first();27var lastItem = listCache.last();28var nextItem = listCache.next();29var previousItem = listCache.previous();30var currentItem = listCache.current();31var currentIndex = listCache.currentIndex();32listCache.reset();

Using AI Code Generation

1var ListCache = require('ListCache');2var ListCache = require('ListCache');3var ListCache = require('ListCache');4var ListCache = require('ListCache');5var ListCache = require('ListCache');6var ListCache = require('ListCache');7var ListCache = require('ListCache');8var ListCache = require('ListCache');

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