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unique-concat
Advanced tools
Concatenates two arrays, removing duplicates in the process and returns one array with unique values.
Concatenates two arrays, removing duplicates in the process and returns one array with unique values.
var concat = require('unique-concat');
var res = concat([ 1, 2, 3 ], [ 1, 2, 3, 4, 5, 6])
console.log(res);
// => [1, 2, 3, 4, 5, 6]
npm install unique-concat
###function uniqueConcat(arr1, arr2[, identity])
/**
* Concatenates two arrays, removing duplicates in the process and returns one array with unique values.
* In case the elements in the array don't have a proper built in way to determine their identity,
* a custom identity function must be provided.
*
* As an example, {Object}s all return '[ 'object' ]' when .toString()ed and therefore require a custom
* identity function.
*
* @name exports
* @function unique-concat
* @param arr1 {Array} first batch of elements
* @param arr2 {Array} second batch of elements
* @param identity {Function} (optional) supply an alternative way to get an element's identity
*/
var identity = function (obj) { return obj.a; }
var res = concat([{ a: 1 }, { a: 2, b: 1}], [{ a: 2, b: 2 }, { a: 3 }], identity);
console.log(res);
// => [ { a: 1 }, { a: 2, b: 2 }, { a: 3 } ]
For more examples see tests
MIT
FAQs
Concatenates two arrays, removing duplicates in the process and returns one array with unique values.
We found that unique-concat demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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