Legacy Multiple

Prefer using the isMultiple(of:) function instead of using the remainder operator (%)

• Identifier: legacy_multiple
• Enabled by default: No
• Supports autocorrection: No
• Kind: idiomatic
• Analyzer rule: No
• Minimum Swift compiler version: 5.0.0
• Default configuration:

  Key	Value
  severity	warning

Non Triggering Examples

cell.contentView.backgroundColor = indexPath.row.isMultiple(of: 2) ? .gray : .white

guard count.isMultiple(of: 2) else { throw DecodingError.dataCorrupted(...) }

sanityCheck(bytes > 0 && bytes.isMultiple(of: 4), "capacity must be multiple of 4 bytes")

guard let i = reversedNumbers.firstIndex(where: { $0.isMultiple(of: 2) }) else { return }

let constant = 56
let isMultiple = value.isMultiple(of: constant)

let constant = 56
let secret = value % constant == 5

let secretValue = (value % 3) + 2

Triggering Examples

cell.contentView.backgroundColor = indexPath.row ↓% 2 == 0 ? .gray : .white

cell.contentView.backgroundColor = 0 == indexPath.row ↓% 2 ? .gray : .white

cell.contentView.backgroundColor = indexPath.row ↓% 2 != 0 ? .gray : .white

guard count ↓% 2 == 0 else { throw DecodingError.dataCorrupted(...) }

sanityCheck(bytes > 0 && bytes ↓% 4 == 0, "capacity must be multiple of 4 bytes")

guard let i = reversedNumbers.firstIndex(where: { $0 ↓% 2 == 0 }) else { return }

let constant = 56
let isMultiple = value ↓% constant == 0