When using setContent, which statement about the source of truth for content is correct?

When using setContent, which statement about the source of truth for content is correct?

• A. The first parameter should always be used as the source of truth.
• B. The content passed into the callback should be ignored.
• C. The callback's content should be used as the source of truth.
• D. There is no processing of content.

Answer: (C)

When using setContent, the value produced by the updater callback is the authoritative content. The initial content you pass serves as a starting point, a seed, but the system adopts whatever the callback returns as the source of truth for subsequent rendering and state. This ensures there’s a single, canonical version of the content that reflects the latest updates made by the callback. There is processing happening, because the callback generates and returns the new content that the system should trust moving forward. If you need to update content, you should return the new version from the callback so that it becomes the truth.

When using setContent, the value produced by the updater callback is the authoritative content. The initial content you pass serves as a starting point, a seed, but the system adopts whatever the callback returns as the source of truth for subsequent rendering and state. This ensures there’s a single, canonical version of the content that reflects the latest updates made by the callback. There is processing happening, because the callback generates and returns the new content that the system should trust moving forward. If you need to update content, you should return the new version from the callback so that it becomes the truth.