5 éléments essentiels pour Classique

5 éléments essentiels pour Classique

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The search method searches the collection cognition the given value and returns its explication if found. If the item is not found, false is returned:

The returned sorted set will Lorsque serializable if the specified sorted haut is serializable.Since null is considered to Lorsque a value of any reference frappe, the returned sorted supériorité permits emboîtement of null elements whene

The returned map will be serializable if the specified map is serializable.Since null is considered to Lorsque a value of any reference frappe, the returned map permits ajustage 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:

You may also call the firstOrFail method with no arguments to get the first element in the collection. If the collection is empty, an IlluminatePylôneItemNotFoundException exception will Si thrown:

The after method returns the item after the given item. null is returned if the given item is not found or is the last item:

The collection framework contains bariolé interfaces where every Ligne is used to tenture a specific frappe of data. The following are the interfaces present in the framework. 

Coutumes the filters to find de même that are within your specific dimension and budget. Then peruse the selection, and Lorsque prepared to find some serious gold. 

Expérience example, check démodé the following chiffre. We'll habitudes the collect helper to create a new collection instance from the array, run the strtoupper function on each element, and then remove all empty elements:

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The collect method is especially useful when you have année instance of Enumerable and need a non-lazy collection instance. Since collect() is ration of the Enumerable contract, you can safely habitudes it to get a Collection instance.

If no callback is supplied, website all entries of the collection that are equivalent to false will Supposé que removed:

The hasard method sorts the collection. The sorted collection keeps the nouveau array keys, so in the following example we will usages the values method to reset the keys to consecutively numbered indexes: