Empty Count

Prefer checking isEmpty over comparing count to zero

  • Identifier: empty_count
  • Enabled by default: No
  • Supports autocorrection: Yes
  • Kind: performance
  • Analyzer rule: No
  • Minimum Swift compiler version: 5.0.0
  • Default configuration:
    KeyValue
    severity error
    only_after_dot false

Non Triggering Examples

var count = 0

[Int]().isEmpty

[Int]().count > 1

[Int]().count == 1

[Int]().count == 0xff

[Int]().count == 0b01

[Int]().count == 0o07

discount == 0

order.discount == 0

Triggering Examples

[Int]().↓count == 0

0 == [Int]().↓count

[Int]().↓count==0

[Int]().↓count > 0

[Int]().↓count != 0

[Int]().↓count == 0x0

[Int]().↓count == 0x00_00

[Int]().↓count == 0b00

[Int]().↓count == 0o00

↓count == 0