Builder pattern

Builder.swift

import Foundation

public typealias Adapter<T> = (inout T) -> Void

public class BuilderHandler<V> {
    let adapter: Adapter<V>
    
    public init(_ handler: @escaping Adapter<V>) {
        self.adapter = handler
    }
}

public protocol Builder {
    typealias Block = Adapter<Self>
    typealias AdapterBlock = BuilderHandler<Self>
}

extension NSObject: Builder {}

extension Builder {
    public func with(_ configure: Block) -> Self {
        var this = self
        configure(&this)
        return this
    }

    public func with(_ configure: AdapterBlock) -> Self {
        var this = self
        configure.adapter(&this)
        return this
    }
    
    public func combining(_ handlers: AdapterBlock...) -> Self {
        var this = self
        for h in handlers {
            h.adapter(&this)
        }
        return this
    }
}

Builder2.swift

protocol Builder {
    typealias Handler = (inout Self) -> Void
}
//extension NSObject: Builder {}
extension NSObject: Builder {}
extension Builder {
    public func with(_ configure: Handler) -> Self {
        var this = self
        configure(&this)
        return this
    }
}
extension Builder where Self: UIView {
    func usingAutoLayout() -> Self {
        self.translatesAutoresizingMaskIntoConstraints = false
        return self
    }
    func userInteractionDisabled() -> Self {
        self.isUserInteractionEnabled = false
        return self
    }
    func userInteractionEnabled() -> Self {
        self.isUserInteractionEnabled = true
        return self
    }
}