add after ary assign assignIn assignInWith assignWith at before bind bindAll bindKey camelCase capitalize castArray ceil chain chunk clamp clone cloneDeep cloneDeepWith cloneWith compact concat conformsTo countBy create curry curryRight debounce deburr defaults defaultsDeep defer delay difference divide drop dropRight each eachRight endsWith entries entriesIn eq escape every extend extendWith fill filter find findIndex findKey findLast findLastIndex findLastKey first flatMap flatMapDeep flatMapDepth flatten flattenDeep flattenDepth flip floor forEach forEachRight forIn forInRight forOwn forOwnRight fromPairs functions functionsIn get groupBy gt gte has hasIn head inRange includes indexOf initial intersection invert invertBy invoke invokeMap isArguments isArray isArrayBuffer isArrayLike isArrayLikeObject isBoolean isBuffer isDate isElement isEmpty isEqual isEqualWith isError isFinite isFunction isInteger isLength isMap isMatch isMatchWith isNaN isNative isNil isNull isNumber isObject isObjectLike isPlainObject isRegExp isSafeInteger isSet isString isSymbol isTypedArray isUndefined isWeakMap isWeakSet join kebabCase keyBy keys keysIn last lastIndexOf lowerCase lowerFirst lt lte map mapKeys mapValues max maxBy mean meanBy memoize merge mergeWith min minBy multiply negate nth omit omitBy once orderBy overArgs pad padEnd padStart parseInt partial partialRight partition pick pickBy pull pullAll pullAllBy pullAllWith pullAt random rearg reduce reduceRight reject remove repeat replace rest result reverse round sample sampleSize set setWith shuffle size slice snakeCase some sortBy sortedIndex sortedIndexOf sortedLastIndex sortedLastIndexOf sortedUniq split spread startCase startsWith subtract sum sumBy tail take takeRight tap template throttle thru toArray toFinite toInteger toLength toLower toNumber toPairs toPairsIn toPlainObject toSafeInteger toString toUpper transform trim trimEnd trimStart truncate unary unescape union uniq uniqBy uniqWith unset unzip unzipWith update updateWith upperCase upperFirst values valuesIn without words wrap wrapperAt wrapperChain wrapperCommit wrapperFlatMap wrapperLodash wrapperNext wrapperPlant wrapperReverse wrapperToIterator wrapperValue xor zip zipObject zipObjectDeep zipWith

Lodash _.uniq


The lodash _.uniq method is a popular utility function in JavaScript that creates a new array with unique values from an existing array. The method accepts a single argument, which is the array that needs to be processed. By default, the method considers each value in the array to be unique based on strict equality.

The lodash _.uniq method works by comparing each value in the input array with the previous values that have been processed. If a value is found to be equal to a previous value, it is ignored and not included in the resulting array. Only the unique values are included in the output. Additionally, the method preserves the order of the unique elements in the output array, which means that the first occurrence of a unique element in the input array is the one that will be included in the output array.

The lodash _.uniq method also supports an optional second argument that can be used to perform a custom comparison between values. This callback function should return a truthy value if two values are considered equal and a falsy value otherwise. This allows for more flexibility when determining which elements should be considered unique.

Here is an example of using the lodash _.uniq method:

const array = [1, 2, 2, 3, 3, 3, 4, 5, 5];
const uniqueArray = _.uniq(array);
console.log(uniqueArray); // [1, 2, 3, 4, 5]

In conclusion, the lodash _.uniq method is a useful utility function for working with arrays in JavaScript. It allows for the easy creation of a new array with unique values from an existing array and provides flexibility with a custom comparison function.