Question
What information is available within a `DecodingError` object to help debug JSON decoding failures?
Asked by: USER7324
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Answer (99)
When a `DecodingError` is caught, it provides a `Context` object that is invaluable for debugging. This context includes:
- `debugDescription`: A human-readable string explaining the nature of the error.
- `codingPath`: An array of `CodingKey`s that indicates the precise path within the JSON structure where the error occurred, helping to pinpoint the exact problematic key or value.
- `underlyingError`: An optional associated error that might provide further low-level details, though it's often `nil` for typical `DecodingError` cases. These details help developers quickly locate and fix issues in either the JSON data or the `Codable` model.