NSNumber Init as Function Reference

Passing NSNumber.init or NSDecimalNumber.init as a function reference is dangerous as it can cause the wrong initializer to be used, causing crashes; use .init(value:) instead

  • Identifier: ns_number_init_as_function_reference
  • Enabled by default: Yes
  • Supports autocorrection: No
  • Kind: lint
  • Analyzer rule: No
  • Minimum Swift compiler version: 5.0.0
  • Default configuration:
    KeyValue
    severity warning

Non Triggering Examples

[0, 0.2].map(NSNumber.init(value:))

let value = NSNumber.init(value: 0.0)

[0, 0.2].map { NSNumber(value: $0) }

[0, 0.2].map(NSDecimalNumber.init(value:))

[0, 0.2].map { NSDecimalNumber(value: $0) }

Triggering Examples

[0, 0.2].map(↓NSNumber.init)

[0, 0.2].map(↓NSDecimalNumber.init)