Which Swift code snippet correctly sets the HTTP method to POST and adds a JSON Content-Type header?

easy📝 Syntax Q12 of 15

iOS Swift - Networking

Arequest.httpMethod = "POST" request.setValue("application/json", forHTTPHeaderField: "Content-Type")

Brequest.method = "POST" request.addHeader("Content-Type", value: "application/json")

Crequest.httpMethod = POST request.setHeader("Content-Type", "application/json")

Drequest.method = POST request.setValue("json", forHTTPHeaderField: "Content-Type")

Step-by-Step Solution

Solution:

Step 1: Set HTTP method correctly
The property to set HTTP method in URLRequest is httpMethod and it expects a String like "POST".
Step 2: Add JSON Content-Type header properly
Use setValue(_:forHTTPHeaderField:) with "application/json" for the "Content-Type" header.
Final Answer:
request.httpMethod = "POST"\nrequest.setValue("application/json", forHTTPHeaderField: "Content-Type") -> Option A
Quick Check:
Correct method and header syntax = A [OK]

Quick Trick: Use request.httpMethod and setValue for headers [OK]

Common Mistakes:

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