🎉 Exercism Research is now launched. Help Exercism, help science and have some fun at research.exercism.io 🎉
Avatar of n0mn0m

n0mn0m's solution

to Two Fer in the Swift Track

Published at Nov 04 2020 · 0 comments
Instructions
Test suite
Solution

Two-fer or 2-fer is short for two for one. One for you and one for me.

"One for X, one for me."

When X is a name or "you".

If the given name is "Alice", the result should be "One for Alice, one for me." If no name is given, the result should be "One for you, one for me."

Setup

Go through the project setup instructions for Xcode using Swift:

http://exercism.io/languages/swift
http://exercism.io/languages/swift/tests

Notably from the source directory:

swift test runs tests
swift package generate-xcodeproj creates an Xcode project

Source

https://en.wikipedia.org/wiki/Two-fer

Submitting Incomplete Solutions

It's possible to submit an incomplete solution so you can see how others have completed the exercise.

LinuxMain.swift

import XCTest
@testable import TwoFerTests

XCTMain([
    testCase(TwoFerTests.allTests),
])

TwoFerTests.swift

import XCTest
@testable import TwoFer

class TwoFerTests: XCTestCase {

    func testNoNameGiven() {
        XCTAssertEqual(TwoFer.twoFer(), "One for you, one for me.")
    }

    func testANameGiven() {
        XCTAssertEqual(TwoFer.twoFer(name: "Alice"), "One for Alice, one for me.")
    }

    func testAnotherNameGiven() {
        XCTAssertEqual(TwoFer.twoFer(name: "Bob"), "One for Bob, one for me.")
    }

    static var allTests: [(String, (TwoFerTests) -> () throws -> Void)] {
        return [
            ("testNoNameGiven", testNoNameGiven),
            ("testANameGiven", testANameGiven),
            ("testAnotherNameGiven", testAnotherNameGiven),
        ]
    }
}
//Solution goes in Sources
func twoFer(name: String = "you") -> String {
    "One for \(name), one for me."
}

Community comments

Find this solution interesting? Ask the author a question to learn more.

What can you learn from this solution?

A huge amount can be learned from reading other people’s code. This is why we wanted to give exercism users the option of making their solutions public.

Here are some questions to help you reflect on this solution and learn the most from it.

  • What compromises have been made?
  • Are there new concepts here that you could read more about to improve your understanding?