[Solved] Examine this Swift code:protocol Drawable { func draw() } class Shape: Drawable { func draw(color:... | iOS Swift

iOS Swift - Swift Language Essentials

Examine this Swift code:

protocol Drawable {
  func draw()
}

class Shape: Drawable {
  func draw(color: String) {
    print("Drawing with color \(color)")
  }
}

What is the issue with the Shape class implementation?

AThe class <code>Shape</code> should be declared as a struct.

BThe method signature in <code>Shape</code> does not match the protocol requirement.

CThe protocol <code>Drawable</code> cannot be adopted by classes.

DThe method <code>draw()</code> should have a return type.

Step-by-Step Solution

Solution:

Step 1: Check protocol method signature
The protocol Drawable requires a method draw() with no parameters.
Step 2: Compare with class method
The class Shape implements draw(color: String), which has a parameter and thus does not match the protocol requirement.
Final Answer:
The method signature mismatch causes a protocol conformance error. -> Option B
Quick Check:
Method signatures must match exactly [OK]

Quick Trick: Method signatures must exactly match protocol requirements [OK]

Common Mistakes:

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