Lodash remove duplicates from array

Question

This is my data                   url   www example com hello           id   22                           url   www example com hello           id   22                           url   www example com hello-how-are-you           id   23                           url   www example com i-like-cats           id   24                           url   www example com i-like-pie           id   25                With Lodash  how could I remove objects with duplicate id keys  Something with filter  map and unique  but not quite sure   My real data set is much larger and has more keys  but the concept should be the same

User · Answer

You could use lodash method   uniqWith  it is available in the current version of lodash 4 17 2   Example   var objects       x   1   y   2       x   2   y   1       x   1   y   2        uniqWith objects    isEqual        gt      x   1   y   2       x   2   y   1      More info  https   lodash com docs  uniqWith

User · Answer

Simply use   uniqBy    It creates duplicate-free version of an array    This is a new way and available from 4 0 0 version     uniqBy data   id      or    uniqBy data  obj   gt  obj id

User · Answer

With lodash version 4   you would remove duplicate objects either by specific property or by the entire object like so   var users        id 1 name  ted       id 1 name  ted       id 1 name  bob       id 3 name  sara      var uniqueUsersByID     uniqBy users  id      removed if had duplicate id var uniqueUsers     uniqWith users    isEqual    removed complete duplicates   Source https   www codegrepper com  search term Lodash remove duplicates from array

User · Answer

You can also use unionBy for 4 0 0 and later  as follows  let uniques     unionBy data   id

User · Answer

Or simply Use union  for simple array     union  1 2 3 3    3 5        1 2 3 5

User · Answer

unique no longer works for the current version of Lodash as version 4 0 0 has this breaking change  The functionality of   unique was splitted into   uniq    sortedUniq    sortedUniqBy  and   uniqBy  You could use   uniqBy like this    uniqBy data  function  e      return e id          or like this    uniqBy data   id     Documentation  https   lodash com docs uniqBy  For older versions of Lodash   lt  4 0 0    Assuming that the data should be uniqued by each object s id property and your data is stored in data variable  you can use the   unique   function like this    unique data  function  e      return e id       Or simply like this    uniq data   id

User · Answer

For a simple array  you have the union approach  but you can also use       uniq  2  1  2

[javascript] Lodash remove duplicates from array

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