explicit_enum_raw_value.md

Pattern: Missing enum raw value

Issue: -

Description

Enums should be explicitly assigned their raw values.

Examples of correct code:

enum Numbers {
 case int(Int)
 case short(Int16)
}


enum Numbers: Int {
 case one = 1
 case two = 2
}


enum Numbers: Double {
 case one = 1.1
 case two = 2.2
}


enum Numbers: String {
 case one = "one"
 case two = "two"
}


protocol Algebra {}
enum Numbers: Algebra {
 case one
}

Examples of incorrect code:

enum Numbers: Int {
 case one = 10, ↓two, three = 30
}


enum Numbers: NSInteger {
 case ↓one
}


enum Numbers: String {
 case ↓one
 case ↓two
}


enum Numbers: String {
 case ↓one, two = "two"
}


enum Numbers: Decimal {
 case ↓one, ↓two
}

Further Reading

• SwiftLint - Explicit Enum Raw Value