Quick Answer

Compiler cannot find a declared identifier

Understanding the Issue

This error means the compiler doesn't recognize the name you're using. Check for typos, missing imports, or scope issues.

The Problem

This code demonstrates the issue:

Swift Error 
// Problem: Missing declaration
print(undeclaredVariable) // Error

The Solution

Here's the corrected code:

Swift Fixed 
// Solution 1: Define the identifier
let declaredVariable = "Hello"
print(declaredVariable)

// Solution 2: Import required module
import Foundation
print(Date())

Key Takeaways

Verify spelling and scope when you see unresolved identifier errors.