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https://github.com/HeftyKoo/pocket-lodash

读lodash源码，lodash source code analyze
https://github.com/HeftyKoo/pocket-lodash

Last synced: about 2 months ago
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读lodash源码，lodash source code analyze

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README 

        
# pocket-lodash



> 能做事的做事，能发声的发声。有一分热，发一分光，就令萤火一般，也可以在黑暗里发一点光，不必等候炬火。

>

> ​																					——鲁迅



很喜欢鲁迅的这段话，在很多社区也会引用作为签名。鲁迅这段话有反抗的意味，用于单纯的技术分享似乎不太合适，可是管它呢。



前一段时间，从 `Zepto` 开始，初尝了阅读源码，以前觉得很难，现在有点上了瘾，这次阅读的是 `lodash` ，平时也会用到这个库，希望可以借此对它有更深入的了解。



这系列的每篇文章应该不会很长，依 `lodash` 的组织，每个文件都会有一篇对应的文章，因此命名为 `pocket-lodash`。



## 源码版本



[lodash master 分支](https://github.com/lodash/lodash)



## GitBook



《[pocket-lodash](https://www.gitbook.com/book/yeyuqiudeng/pocket-lodash/details)》



## 目录



* [internal]()

  * [Hash](internal/Hash.md)

  * [assocIndexOf](internal/assocIndexOf.md)

  * [ListCache](internal/ListCache.md)

  * [MapCache](internal/MapCache.md)

  * [SetCache](internal/SetCache.md)

  * [baseFindIndex](internal/baseFindIndex.md)

  * [baseIsNaN](eq.md)

  * [strictIndexOf](internal/strictIndexOf.md)

  * [baseIndexOf](internal/baseIndexOf.md)

  * [arrayIncludes](internal/arrayIncludes.md)

  * [arrayIncludesWith](internal/arrayIncludesWith.md)

  * [cacheHas](internal/cacheHas.md)

  * [baseDifference](internal/baseDifference.md)

  * [baseGetTag](internal/baseGetTag.md)

  * [getTag](internal/getTag.md)

  * [isFlattenable](internal/isFlattenable.md)

  * [baseFlatten](internal/baseFlatten.md)

  * [baseWhile](internal/baseWhile.md)

  * [baseIntersection](internal/baseIntersection.md)

  * [castArrayLikeObject](internal/castArrayLikeObject.md)

  * [strictLastIndexOf](internal/strictLastIndexOf.md)

  * [isIndex](internal/isIndex.md)

  * [baseIndexOfWith](internal/baseIndexOfWith.md)

  * [copyArray](internal/copyArray.md)

  * [basePullAll](internal/basePullAll.md)

  * [isKey](internal/isKey.md)

  * [memoizeCapped](internal/memoizeCapped.md)

  * [stringToPath](internal/stringToPath.md)

  * [castPath](internal/castPath.md)

  * [toKey](internal/toKey.md)

  * [baseGet](internal/baseGet.md)

  * [baseAt](internal/baseAt.md)

  * [parent](internal/parent.md)

  * [baseUnset](internal/baseUnset.md)

  * [basePullAt](internal/basePullAt.md)

  * [compareAscending](internal/compareAscending.md)

  * [baseSortedIndexBy](internal/baseSortedIndexBy.md)

  * [baseSortedIndex](internal/baseSortedIndex.md)

  * [baseSortedUniq](internal/baseSortedUniq.md)

  * [setToArray](internal/setToArray.md)

  * [createSet](internal/createSet.md)

  * [baseUniq](internal/baseUniq.md)

  * [baseProperty](internal/baseProperty.md)

  * [baseXor](internal/baseXor.md)

  * [baseAssignValue](internal/baseAssignValue.md)

  * [assignValue](internal/assignValue.md)

  * [baseZipObject](internal/baseZipObject.md)

  * [baseSet](internal/baseSet.md)

  * [arrayReduce](internal/arrayReduce.md)

  * [baseFor](internal/baseFor.md)

  * [freeGlobal](internal/freeGlobal.md)

  * [root](internal/root.md)

  * [nodeTypes](internal/nodeTypes.md)

  * [arrayLikeKeys](internal/arrayLikeKeys.md)

  * [baseForOwn](internal/baseForOwn.md)

  * [baseEach](internal/baseEach.md)

  * [baseReduce](internal/baseReduce.md)

  * [arrayEach](internal/arrayEach.md)

  * [arrayEachRight](internal/arrayEachRight.md)

  * [baseForRight](internal/baseForRight.md)

  * [baseForOwnRight](internal/baseForOwnRight.md)

  * [baseEachRight](internal/baseEachRight.md)

  * [baseSortBy](internal/baseSortBy.md)

  * [compareMultiple](internal/compareMultiple.md)

  * [baseOrderBy](internal/baseOrderBy.md)

  * [arrayReduceRight](internal/arrayReduceRight.md)

  * [asciiSize](internal/asciiSize.md)

  * [hasUnicode](internal/hasUnicode.md)

  * [unicodeSize](internal/unicodeSize.md)

  * [stringSize](internal/stringSize.md)

  * [Stack](internal/Stack.md)

  * [cloneBuffer](internal/cloneBuffer.md)

  * [copyObject](internal/copyObject.md)

  * [copyArrayBuffer](internal/copyArrayBuffer.md)

  * [cloneDataView](internal/cloneDataView.md)

  * [cloneTypedArray](internal/cloneTypedArray.md)

  * [cloneRegExp](internal/cloneRegExp.md)

  * [cloneSymbol](internal/cloneSymbol.md)

  * [getSymbols](internal/getSymbols.md)

  * [copySymbols](internal/copySymbols.md)

  * [getSymbolsIn](internal/getSymbolsIn.md)

  * [copySymbolsIn](internal/copySymbolsIn.md)

  * [getAllKeys](internal/getAllKeys.md)

  * [getAllKeysIn](internal/getAllKeysIn.md)

  * [isPrototype](internal/isPrototype.md)

  * [initCloneObject](internal/initCloneObject.md)

  * [baseClone](internal/baseClone.md)

  * [baseConformsTo](internal/baseConformsTo.md)

  * [equalArrays](internal/equalArrays.md)

  * [mapToArray](internal/mapToArray.md)

  * [equalByTag](internal/equalByTag.md)

  * [equalObjects](internal/equalObjects.md)

  * [baseIsEqualDeep](internal/baseIsEqualDeep.md)

  * [baseIsEqual](internal/baseIsEqual.md)

  * [isStrictComparable](internal/isStrictComparable.md)

  * [getMatchData](internal/getMatchData.md)

  * [baseIsMatch](internal/baseIsMatch.md)

  * [iteratorToArray](internal/iteratorToArray.md)

  * [asciiToArray](internal/asciiToArray.md)

  * [unicodeToArray](internal/unicodeToArray.md)

  * [stringToArray](internal/stringToArray.md)

  * [baseValues](internal/baseValues.md)

  * [baseToNumber](internal/baseToNumber.md)

  * [baseToString](internal/baseToString.md)

  * [createMathOperation](internal/createMathOperation.md)

  * [createRound](internal/createRound.md)

  * [baseSum](internal/baseSum.md)

  * [baseInRange](internal/baseInRange.md)

  * [assignMergeValue](internal/assignMergeValue.md)

  * [baseMergeDeep](internal/baseMergeDeep.md)

  * [baseMerge](internal/baseMerge.md)

  * [createAssigner](internal/createAssigner.md)

  * [baseFindKey](internal/baseFindKey.md)

  * [basePickBy](internal/basePickBy.md)

  * [basePick](internal/basePick.md)

  * [baseUpdate](internal/baseUpdate.md)

  * [castSlice](internal/castSlice.md)

  * [createCaseFirst](internal/createCaseFirst.md)

  * [unicodeWords](internal/unicodeWords.md)

  * [basePropertyOf](internal/basePropertyOf.md)

  * [deburrLetter](internal/deburrLetter.md)

  * [createPadding](internal/createPadding.md)

  * [charsEndIndex](internal/charsEndIndex,md)

  * [charsStartIndex](internal/charsStartIndex.md)

  * [baseConforms](internal/baseConforms.md)

  * [matchesStrictComparable](internal/matchesStrictComparable.md)

  * [baseMatches](internal/baseMatches.md)

  * [baseMatchesProperty](internal/baseMatchesProperty.md)

  * [basePropertyDeep](internal/basePropertyDeep.md)

  * [baseRange](internal/baseRange.md)

  * [createRange](internal/createRange.md)



* [slice](slice.md)

* [chunk](chunk.md)

* [compact](compact.md)

* [eq](eq.md)

* [map](map.md)

* [isObjectLike](isObjectLike.md)

* [isArguments](isArguments.md)

* [isLength](isLength.md)

* [isArrayLike](isArrayLike.md)

* [isArrayLikeObject](isArrayLikeObject.md)

* [difference](difference.md)

* [last](last.md)

* [differenceBy](differenceBy.md)

* [differenceWith](differenceWith.md)

* [drop](drop.md)

* [dropRight](dropRight.md)

* [dropRightWhile](dropRightWhile.md)

* [dropWhile](dropWhile.md)

* [findLastIndex](findLastIndex.md)

* [head](head.md)

* [flatten](flatten.md)

* [flattenDeep](flattenDeep.md)

* [flattenDepth](flattenDepth.md)

* [fromPairs](fromPairs.md)

* [indexOf](indexOf.md)

* [initial](initial.md)

* [intersection](intersection.md)

* [intersectionBy](intersectionBy.md)

* [intersectionWith](intersectionWith.md)

* [isObject](isObject.md)

* [isSymbol](isSymbol.md)

* [toNumber](toNumber.md)

* [toFinite](toFinite.md)

* [toInteger](toInteger.md)

* [lastIndexOf](lastIndexOf.md)

* [nth](nth.md)

* [pullAll](pullAll.md)

* [pull](pull.md)

* [pullAllBy](pullAllBy.md)

* [pullAllWith](pullAllWith.md)

* [memoize](memoize.md)

* [get](get.md)

* [pullAt](pullAt.md)

* [remove](remove.md)

* [sortedIndex](sortedIndex.md)

* [sortedIndexBy](sortedIndexBy.md)

* [sortedIndexOf](sortedIndexOf.md)

* [sortedLastIndex](sortedLastIndex.md)

* [sortedLastIndexBy](sortedLastIndexBy.md)

* [sortedLastIndexOf](sortedLastIndexOf.md)

* [sortedUniq](sortedUniq.md)

* [sortedUniqBy](sortedUniqBy.md)

* [tail](tail.md)

* [take](take.md)

* [takeRight](takeRight.md)

* [takeRightWhile](takeRightWhile.md)

* [takeWhile](takeWhile.md)

* [union](union.md)

* [unionBy](unionBy.md)

* [unionWith](unionWith.md)

* [uniq](uniq.md)

* [uniqBy](uniqBy.md)

* [uniqWith](uniqWith.md)

* [filter](filter.md)

* [zip](zip.md)

* [unzipWith](unzipWith.md)

* [without](without.md)

* [xor](xor.md)

* [xorBy](xorBy.md)

* [xorWith](xorWith.md)

* [zip](zip.md)

* [zipObject](zipObject.md)

* [zipObjectDeep](zipObjectDeep.md)

* [zipWith](zipWith.md)

* [isBuffer](isBuffer.md)

* [isTypedArray](isTypedArray.md)

* [keys](keys.md)

* [reduce](reduce.md)

* [countBy](countBy.md)

* [forEach](forEach.md)

* [forEachRight](forEachRight.md)

* [every](every.md)

* [findLast](findLast.md)

* [flatMap](flatMap.md)

* [flatMapDeep](flatMapDeep.md)

* [flatMapDepth](flatMapDepth.md)

* [groupBy](groupBy.md)

* [invoke](invoke.md)

* [invokeMap](invokeMap.md)

* [keyBy](keyBy.md)

* [orderBy](orderBy.md)

* [partition](partition.md)

* [reduceRight](reduceRight.md)

* [filterObject](filterObject.md)

* [negate](negate.md)

* [reject](reject.md)

* [sample](sample.md)

* [sampleSize](sampleSize.md)

* [shuffle](shuffle.md)

* [isString](isString.md)

* [size](size.md)

* [after](after.md)

* [before](before.md)

* [debounce](debounce.md)

* [throttle](throttle.md)

* [defer](defer.md)

* [delay](delay.md)

* [flip](flip.md)

* [once](once.md)

* [overArgs](overArgs.md)

* [castArray](castArray.md)

* [keysIn](keysIn.md)

* [clone](clone.md)

* [cloneDeep](cloneDeep.md)

* [cloneDeepWith](cloneDeepWith.md)

* [cloneWith](cloneWith.md)

* [conformsTo](conformsTo.md)

* [gt](gt.md)

* [gte](gte.md)

* [isArrayBuffer](isArrayBuffer.md)

* [isBoolean](isBoolean.md)

* [isDate](isDate.md)

* [isPlainObject](isPlainObject.md)

* [isElement](isElement.md)

* [isEmpty](isEmpty.md)

* [some](some.md)

* [eqDeep](eqDeep.md)

* [isEqualWith](isEqualWith.md)

* [isError](isError.md)

* [isFunction](isFunction.md)

* [isMap](isMap.md)

* [isMatch](isMatch.md)

* [isMatchWith](isMatchWith.md)

* [isNative](isNative.md)

* [isNil](isNil.md)

* [isNull](isNull.md)

* [isNumber](isNumber.md)

* [isRegExp](isRegExp.md)

* [isSet](isSet.md)

* [isUndefined](isUndefined.md)

* [isWeakMap](isWeakMap.md)

* [isWeakSet](isWeakSet.md)

* [lt](lt.md)

* [lte](lte.md)

* [values](values.md)

* [toArray](toArray.md)

* [toLength](toLength.md)

* [toPlainObject](toPlainObject.md)

* [toSafeInteger](toSafeInteger.md)

* [toString](toString.md)

* [add](add.md)

* [ceil](ceil.md)

+ [divide](divide.md)

+ [floor](floor.md)

+ [maxBy](maxBy.md)

+ [meanBy](meanBy.md)

+ [mean](mean.md)

+ [minBy](minBy.md)

+ [multiply](multiply.md)

+ [round](round.md)

+ [subtract](subtract.md)

+ [sum](sum.md)

+ [sumBy](sumBy.md)

+ [clamp](clamp.md)

+ [inRange](inRange.md)

+ [random](random.md)

+ [at](at.md)

+ [create](create.md)

+ [defaults](defaults.md)

+ [mergeWith](mergeWith.md)

+ [defaultsDeep](defaultsDeep.md)

+ [fromEntries](fromEntries.md)

+ [findKey](findKey.md)

+ [findLastKey](findLastKey.md)

+ [functions](functions.md)

+ [has](has.md)

+ [hasIn](hasIn.md)

+ [invert](invert.md)

+ [invertBy](invertBy.md)

+ [mapKey](mapKey.md)

+ [mapValue](mapValue.md)

+ [merge](merge.md)

+ [pick](pick.md)

+ [pickBy](pickBy.md)

+ [result](result.md)

+ [set](set.md)

+ [setWith](setWith.md)

+ [transform](transform.md)

+ [unset](unset.md)

+ [update](update.md)

+ [updateWith](updateWith.md)

+ [upperFirst](upperFirst.md)

+ [words](words.md)

+ [camelCase](camelCase.md)

+ [capitalize](capitalize.md)

+ [deburr](deburr.md)

+ [endsWith](endsWith.md)

+ [escape](escape.md)

+ [escapeRegExp](escapeRegExp.md)

+ [kebabCase](kebabCase.md)

+ [lowerCase](lowerCase.md)

+ [lowerFirst](lowerFirst.md)

+ [repeat](repeat.md)

+ [pad](pad.md)

+ [padEnd](padEnd.md)

+ [padStart](padStart.md)

+ [parseInt](parseInt.md)

+ [replace](replace.md)

+ [snakeCase](snakeCase.md)

+ [split](split.md)

+ [startCase](startCase.md)

+ [startsWith](startsWith.md)

+ [trim](trim.md)

+ [trimEnd](trimEnd.md)

+ [trimStrat](trimStrat.md)

+ [truncate](truncate.md)

+ [unescape](unescape.md)

+ [upperCase](upperCase.md)

+ [attempt](attempt.md)

+ [cond](cond.md)

+ [conforms](conforms.md)

+ [defaultTo](defaultTo.md)

+ [flow](flow.md)

+ [flowRight](flowRight.md)

+ [matches](matches.md)

+ [matchesProperty](matchesProperty.md)

+ [method](method.md)

+ [methodOf](methodOf.md)

+ [nthArg](nthArg.md)

+ [over](over.md)

+ [overEvery](overEvery.md)

+ [overSome](overSome.md)

+ [property](property.md)

+ [propertyOf](propertyOf.md)

+ [range](range.md)

+ [rangeRight](rangeRight.md)

+ [times](times.md)

+ [toPath](toPath.md)

+ [uniqueId](uniqueId.md)

+ [someValues](someValues.md)

+ [hasPath](hasPath.md)

+ [hasPathIn](hasPathIn.md)



## License



[署名-非商业性使用-禁止演绎 4.0 国际 (CC BY-NC-ND 4.0)](http://creativecommons.org/licenses/by-nc-nd/4.0/)



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