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INTRODUCE NULL OBJECT
Abelardo LeΓ³n GonzΓ‘lez 7 Π»Π΅Ρ Π½Π°Π·Π°Π΄
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ΠΎΠ±Π½ΠΎΠ²Π»Π΅Π½ anonymous 7 Π»Π΅Ρ Π½Π°Π·Π°Π΄ β’
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Hi,
I took a look inside this chapter.
At the proposed example, you didn't remove the null checking:
$customer = ($order->customer !== <b>null</b>) ? $order->customer : <b>new</b> NullCustomer;
So, I don't see the worth of this solution...or I don't understand your suggestion.
Best regards,
Abelardo.
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Hi Alberado!
I'm sorry for the very late reply.Β I think the non-obvious part of the examples is that this null check can be shifted to the place where you get the customer instance originally, a getter for example. Then you can eliminate dozens of null checks across the code that uses the customer object for a price of one initial null check in the getter.
Π‘Π΅ΡΠ²ΠΈΡ ΠΏΠΎΠ΄Π΄Π΅ΡΠΆΠΊΠΈ ΠΊΠ»ΠΈΠ΅Π½ΡΠΎΠ² ΡΠ°Π±ΠΎΡΠ°Π΅Ρ Π½Π° ΠΏΠ»Π°ΡΡΠΎΡΠΌΠ΅ UserEcho
Hi Alberado!
I'm sorry for the very late reply.Β I think the non-obvious part of the examples is that this null check can be shifted to the place where you get the customer instance originally, a getter for example. Then you can eliminate dozens of null checks across the code that uses the customer object for a price of one initial null check in the getter.