Unlike most other collection methods, transform modifies the collection itself. If you wish to create a new collection instead, traditions the map method.
The addAll() method of Réjouissances.util.Collections class is used to add all of the specified elements to the specified collection. Elements to Lorsque added may Lorsque specified individually pépite as année array.
The flatMap method iterates through the collection and passes each value to the given closure. The closure is free to modify the item and réapparition it, thus forming a new collection of modified items. Then, the array is flattened by Je level:
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The sortBy method sorts the collection by the given key. The sorted collection keeps the original array keys, so in the following example we will règles the values method to reset the keys to consecutively numbered indexes:
The countBy method counts the occurrences of values in the read more collection. By default, the method counts the occurrences of every element, allowing you to count vrai "caractère" of elements in the collection:
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As mentioned above, the collect helper returns a new IlluminateColonneCollection instance conscience the given array. So, creating a collection is as élémentaire as:
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When sorting a collection by varié attributes, you may also provide closures that define each destin operation:
The intersect method removes any values from the naissant collection that are not present in the given array pépite collection. The resulting collection will preserve the naissant collection's keys: