Order of Parameters
In languages without named parameters, the order of parameters is necessarily fixed, since it is the only thing that the language can use to identify which value is intended to be used for which purpose.
With named parameters, it is usually possible to provide the values in any arbitrary order, since the name attached to each value identifies its purpose. A few languages such as Objective-C use names but require the parameters to be provided in a specific order.
Read more about this topic: Named Parameter
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