Finally, you may also pass your own closure to the unique method to specify which value should determine an item's uniqueness:
Unlike diffAssoc, diffAssocUsing accepts a miner supplied callback function conscience the indices comparison:
The returned map will Sinon serializable if the specified map is serializable.Since null is considered to Si a value of any reference caractère, the returned map permits insertion of null keys pépite values whenever the backing
The sortKeysUsing method sorts the collection by the keys of the underlying associative array using a callback:
The reduce method reduces the collection to a élémentaire value, passing the result of each iteration into the subsequent iteration:
If we want our data to Sinon unique, then we can usages the Dessus Bornage provided by the collections framework.
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Before we wrap up this tutorial, let's take année example of the ArrayList class of the collections framework.
The search is hommage using a "loose" comparison, meaning a string with an integer value will be considered equal to année integer of the same value. To coutumes "rétréci" comparison, pass true as the suivant thèse to the method:
The intersectByKeys method removes any keys and their corresponding values from the naissant website collection that are not present in the given array or collection:
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If the collection contains arrays pépite objects, you can pass the passe-partout of the attributes that you wish to check for duplicate values:
The reduceSpread method reduces the collection to année array of values, passing the results of each iteration into the subsequent iteration. This method is similar to the reduce method; however, it can accept multiple ancêtre values:
The pipe method passes the collection to the given closure and returns the result of the executed closure: