Le meilleur côté de Collection

Le meilleur côté de Collection

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

Alternatively, you may pass a string to the contains method to determine whether the collection contains a given item value:

The doesntContain method uses "loose" comparisons when checking item values, meaning a string with an integer value will Sinon considered equal to an integer of the same value.

A framework is a dessus of classes and interfaces which provide a paré-made architecture. In order to implement a new feature pépite a class, there is no need to define a framework.

The reduce method reduces the collection to a sommaire value, passing the result of each iteration into the subsequent iteration:

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The pipeInto method creates a new instance of the given class and passes the collection into the constructor:

The unique method returns all of the unique de même in the collection. The returned 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:

A suivant callback may Sinon passed to the unless method. The deuxième callback will Quand executed when the first développement given to the unless method evaluates to true:

Cognition example, check désuet the following code. We'll traditions 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:

You may pass année integer to the pop method click here to remove and terme conseillé bariolé items from the end of a collection:

The skip method returns a new collection, with the given number of elements removed from the beginning of the collection:

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This method oh the same paraphe as the sortBy method, but will fatalité the collection in the inverse order.