Contains over range(of:) comparison to nil

Prefer contains over range(of:) != nil and range(of:) == nil.

• Identifier: contains_over_range_nil_comparison
• Enabled by default: Disabled
• Supports autocorrection: No
• Kind: performance
• Analyzer rule: No
• Minimum Swift compiler version: 3.0.0
• Default configuration: warning

Non Triggering Examples

let range = myString.range(of: "Test")

myString.contains("Test")

!myString.contains("Test")

resourceString.range(of: rule.regex, options: .regularExpression) != nil

Triggering Examples

↓myString.range(of: "Test") != nil

↓myString.range(of: "Test") == nil