[Solved] How can you simplify this closure using Swift's shorthand argument names?let divide = { (a: Int, b: Int) -> Int in return a / b } | iOS Swift

iOS Swift - Swift Language Essentials

How can you simplify this closure using Swift's shorthand argument names?

let divide = { (a: Int, b: Int) -> Int in
  return a / b
}

Alet divide = { a, b -> Int in a / b }

Blet divide = { $0 / $1 }

Clet divide = { (x, y) in x / y }

Dlet divide = { (a: Int, b: Int) in return a / b }

Step-by-Step Solution

Solution:

Step 1: Understand shorthand argument names
Swift allows using $0, $1 for first and second closure parameters.
Step 2: Identify the simplified closure
let divide = { $0 / $1 } uses $0 and $1 to replace explicit parameters and return statement.
Final Answer:
let divide = { $0 / $1 } -> Option B
Quick Check:
Shorthand closure syntax = let divide = { $0 / $1 } [OK]

Quick Trick: Use $0, $1 for closure parameters to shorten code [OK]

Common Mistakes:

Master "Swift Language Essentials" in iOS Swift

9 interactive learning modes - each teaches the same concept differently

More iOS Swift Quizzes

How can you simplify this closure using Swift's shorthand argument names?