unused_declaration - ApplebaumIan/BitbucketAPI GitHub Wiki

Unused Declaration

Declarations should be referenced at least once within all files linted.

  • Identifier: unused_declaration
  • Enabled by default: Disabled
  • Supports autocorrection: No
  • Kind: lint
  • Analyzer rule: Yes
  • Minimum Swift compiler version: 3.0.0
  • Default configuration: severity: error, include_public_and_open: false

Non Triggering Examples

let kConstant = 0
_ = kConstant
enum Change<T> {
  case insert(T)
  case delete(T)
}

extension Sequence {
  func deletes<T>() -> [T] where Element == Change<T> {
    return compactMap { operation in
      if case .delete(let value) = operation {
        return value
      } else {
        return nil
      }
    }
  }
}

let changes = [Change.insert(0), .delete(0)]
changes.deletes()
struct Item {}
struct ResponseModel: Codable {
    let items: [Item]

    enum CodingKeys: String, CodingKey {
        case items = "ResponseItems"
    }
}

_ = ResponseModel(items: [Item()]).items
class ResponseModel {
    @objc func foo() {
    }
}
_ = ResponseModel()

Triggering Examples

let ↓kConstant = 0
struct Item {}
struct ↓ResponseModel: Codable {
    let ↓items: [Item]

    enum ↓CodingKeys: String {
        case items = "ResponseItems"
    }
}
class ↓ResponseModel {
    func ↓foo() {
    }
}
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