Answer to Question #262646 in Java | JSP | JSF for Thuy

Question

You are required to implement design patterns using an IDE such as Eclipse. Tasks are following:

• Setup of a project with version control. develop a small application that implements a few examples of

creational, structural and behavioral design patterns.

• Evaluate the use of design patterns for the given purpose specified. Discuss trade-offs/consequences by

applying design patterns.

Note: You must submit a report and full examples code.

Answer 1

extension Expression {
    func parenthesize(_ s: String) -> String
    
    var isOperatorCall: Bool { get }
    
    func asRuby(depth: Int = 0) -> String {
        switch kind {
        case .bare: { }
        case .call:
            if isOperatorCall {  }
            else {  }
        case .functionDefinition: {  }
        case .empty: {  }
        case .variableDeclaration: {  }
        case .conditional:
            guard c.count == 3 else {  }
            let c = chd[0]
            let pos = chd[1]
            let neg = chd[2]
            {  }
        }
    }
}