Laravel's new features: high-level messaging

LaravelThe emergence of 5.4 framework will definitely also New features will appear as a result. One of these is support for higher-order messaging on collections. The so-called higher-order messaging (Higher Order Messaging) is actually a design pattern for querying and operating on collections of objects in a purely object-oriented manner.

The best way to demonstrate new features is through example code. Suppose you have a collection and want to operate on each element in it:

$invoices->each(function($invoice) { $invoice->pay(); });

With the new features you can The above code is simplified as follows:

$invoices->each->pay();

Another demonstration example is as follows:

$employees->reject(function($employee) { return $employee->retired; })->each(function($employee) { $employee->sendPayment(); });

Similarly, through the new features of 5.4 we can simplify it as follows:

$employees->reject->retired->each->sendPayment();

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