[Solved] Identify the error in this Swift code using NSPredicate and sorting: let numbers = [5, 3, 8, 1] let predicate = NSPredicate(format: "SELF > 4") let filtered = numbers.filter { predicate.... | iOS Swift

iOS Swift - Local Data Persistence

Identify the error in this Swift code using NSPredicate and sorting:

let numbers = [5, 3, 8, 1]
let predicate = NSPredicate(format: "SELF > 4")
let filtered = numbers.filter { predicate.evaluate(with: $0) }
let sorted = filtered.sorted(by: { $0 < $1 })
print(sorted)

ANSPredicate format string is incorrect

BNo error; code works as expected

CFiltering with predicate.evaluate(with:) is correct

DCannot use NSPredicate with Int values

Step-by-Step Solution

Solution:

Step 1: Check NSPredicate format
The format "SELF > 4" is valid for filtering numbers greater than 4.
Step 2: Verify filtering and sorting logic
Using predicate.evaluate(with:) inside filter is valid; sorting ascending is correct.
Final Answer:
No error; code works as expected -> Option B
Quick Check:
Predicate with Int and filter works fine [OK]

Quick Trick: Evaluate predicate inside filter is valid for Int arrays [OK]

Common Mistakes:

Thinking NSPredicate can't filter Ints
Assuming format string is wrong
Expecting error in sorting syntax

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More iOS Swift Quizzes

Identify the error in this Swift code using NSPredicate and sorting:

Step 1: Check NSPredicate format

Step 2: Verify filtering and sorting logic

Final Answer:

Quick Check:

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