iOS Swift - Local Data Persistence
Which of the following is the correct syntax to create an NSPredicate filtering for names equal to "John"?
Which of the following is the correct syntax to create an NSPredicate filtering for names equal to "John"?
easy📝 Syntax Q12 of 15
Step-by-Step Solution
Solution:
Step 1: Recall NSPredicate format syntax
NSPredicate uses format strings with == for equality comparison.Step 2: Identify correct equality operator
== is the correct operator; = or === are invalid in NSPredicate format.Final Answer:
NSPredicate(format: "name == 'John'") -> Option AQuick Check:
Use == for equality in NSPredicate [OK]
Quick Trick: Use double equals (==) for equality in predicates [OK]
Common Mistakes:
- Using single equals (=) instead of double (==)
- Using === which is not valid in NSPredicate
- Writing 'equals' as a word instead of operator
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