Which of the following is a valid way to create an NSPredicate that filters for age greater than 18?

easy📝 Conceptual Q2 of 15

iOS Swift - Local Data Persistence

Which of the following is a valid way to create an NSPredicate that filters for age greater than 18?

ANSPredicate(condition: "age > 18")

BNSPredicate("age > 18")

CNSPredicate(filter: "age > 18")

DNSPredicate(format: "age > 18")

Step-by-Step Solution

Solution:

Step 1: Recall NSPredicate initializer syntax
The correct initializer uses the format parameter with a string describing the condition.
Step 2: Identify correct syntax
Only NSPredicate(format: "age > 18") uses the correct initializer: NSPredicate(format: "age > 18").
Final Answer:
NSPredicate(format: "age > 18") -> Option D
Quick Check:
NSPredicate uses format: string [OK]

Quick Trick: Use NSPredicate(format: "condition") to create predicates [OK]

Common Mistakes:

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