SwiftCop

The declarative syntax, modeled after Ruby on Rails Active Record validations, makes validation rules intuitive and readable, as demonstrated in the example with simple trial definitions.

Includes out-of-the-box trials for common checks like email format, string length, and regex patterns, reducing the need for repetitive code, as shown with Trial.Email and Trial.Length.

Developers can easily create custom validation logic by implementing the TrialProtocol, allowing for flexible integration of business-specific rules beyond the provided trials.

The Suspect struct directly links validation to UITextField inputs, enabling real-time feedback in UIKit apps, as illustrated in the example with verdict() methods for error messages.