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:

  Key	Value
  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