Number Separator

Underscores should be used as thousand separator in large decimal numbers.

• Identifier: number_separator
• Enabled by default: Disabled
• Supports autocorrection: Yes
• Kind: style
• Analyzer rule: No
• Minimum Swift compiler version: 3.0.0
• Default configuration: warning, minimum_length: 0

Non Triggering Examples

let foo = -100

let foo = -1_000

let foo = -1_000_000

let foo = -1.000_1

let foo = -1_000_000.000_000_1

let binary = -0b10000

let binary = -0b1000_0001

let hex = -0xA

let hex = -0xAA_BB

let octal = -0o21

let octal = -0o21_1

let exp = -1_000_000.000_000e2

let foo: Double = -(200)

let foo: Double = -(200 / 447.214)

let foo = +100

let foo = +1_000

let foo = +1_000_000

let foo = +1.000_1

let foo = +1_000_000.000_000_1

let binary = +0b10000

let binary = +0b1000_0001

let hex = +0xA

let hex = +0xAA_BB

let octal = +0o21

let octal = +0o21_1

let exp = +1_000_000.000_000e2

let foo: Double = +(200)

let foo: Double = +(200 / 447.214)

let foo = 100

let foo = 1_000

let foo = 1_000_000

let foo = 1.000_1

let foo = 1_000_000.000_000_1

let binary = 0b10000

let binary = 0b1000_0001

let hex = 0xA

let hex = 0xAA_BB

let octal = 0o21

let octal = 0o21_1

let exp = 1_000_000.000_000e2

let foo: Double = (200)

let foo: Double = (200 / 447.214)

Triggering Examples

let foo = ↓-10_0

let foo = ↓-1000

let foo = ↓-1000e2

let foo = ↓-1000E2

let foo = ↓-1__000

let foo = ↓-1.0001

let foo = ↓-1_000_000.000000_1

let foo = ↓-1000000.000000_1

let foo = +↓10_0

let foo = +↓1000

let foo = +↓1000e2

let foo = +↓1000E2

let foo = +↓1__000

let foo = +↓1.0001

let foo = +↓1_000_000.000000_1

let foo = +↓1000000.000000_1

let foo = ↓10_0

let foo = ↓1000

let foo = ↓1000e2

let foo = ↓1000E2

let foo = ↓1__000

let foo = ↓1.0001

let foo = ↓1_000_000.000000_1

let foo = ↓1000000.000000_1

let foo: Double = ↓-(100000)

let foo: Double = ↓-(10.000000_1)

let foo: Double = ↓-(123456 / ↓447.214214)

let foo: Double = +(↓100000)

let foo: Double = +(↓10.000000_1)

let foo: Double = +(↓123456 / ↓447.214214)

let foo: Double = (↓100000)

let foo: Double = (↓10.000000_1)

let foo: Double = (↓123456 / ↓447.214214)