Quick Answer

Resolve incompatible type assignments.

Understanding the Issue

Swift is strongly typed and prevents assignments between incompatible types without explicit conversion.

The Problem

This code demonstrates the issue:

Swift Error 
let str: String = 42 // Error

The Solution

Here's the corrected code:

Swift Fixed 
// Solution 1: Explicit conversion
let str = String(42)

// Solution 2: Type annotation with correct type
let num: Int = 42

// Solution 3: Protocol-based approach
protocol StringConvertible {
    func toString() -> String
}

extension Int: StringConvertible {
    func toString() -> String {
        return String(self)
    }
}

let converted = 42.toString()

Key Takeaways

Ensure type compatibility or provide explicit conversions.