社内勉強会の近況

先週から会社に新たなプログラマが加わり、毎日のように勉強会に明け暮れてます。

なので、最近はバックエンドに関する記事が書けない状態ですｗ

彼はイタリア出身の方で、幼い頃からPascalを触ったりゲームをしたりと、かなりプログラマとしての適性を備えていますｗ

最近は僕がRailsで作ったアプリケーションと連携できるモバイルアプリケーションを作ってもらうために、XamarinでC#のアプリケーションを作る練習をしてもらっています。

昨日まではXamarinのInterface APIsとC#のデータ構造を勉強するために、世界時計と数字当てゲームを作成したので、作成したコードをGithubとGISTに公開しています。

全然このブログの方針から外れている気もしますが、とりあえずコードのURLをのっけときますw

Number Suggestion

using System;
using Android.App;
using Android.Content;
using Android.Runtime;
using Android.Views;
using Android.Widget;
using Android.OS;
using System.Collections;

// The program generates 3 random numbers and the user must guess them. Guess the number isn't enough though!
// The user must also find out the right order in which order they are.
namespace GuessTheNumber
{
    [Activity (Label = "GuessTheNumber", MainLauncher = true)]
    public class MainActivity : Activity
    { 
        int first,second,third;
        int numberOfGuess = 0;
        Random r = new Random();
        EditText guess1,guess2,guess3;
        String guessString1,guessString2,guessString3;
        TextView matchLabel,orderLabel,scoreLabel;
        Button guessButton;
        int answerArray = new int[3];
        int guessArray = new int[3];
        ArrayList answerArrayList = new ArrayList();


        protected override void OnCreate (Bundle bundle)
        {
            base.OnCreate (bundle);
            SetContentView (Resource.Layout.Main);
            //generates 3 random numbers
            first = r.Next(10)+1;
            second = r.Next(10)+1;
            third = r.Next(10)+1;
            // puts them into an array
            answerArray [0] = first;
            answerArray [1] = second;
            answerArray [2] = third;

            Console.WriteLine ("The random numbers are " + first + " " + second + " " + third);

            //Initializes the widget variables
            matchLabel = FindViewById<TextView> (Resource.Id.matchNumber);
            orderLabel= FindViewById<TextView> (Resource.Id.orderNumber);
            scoreLabel= FindViewById<TextView> (Resource.Id.score);
            guess1 = FindViewById<EditText> (Resource.Id.editText1);
            guess2 = FindViewById<EditText> (Resource.Id.editText2);
            guess3 = FindViewById<EditText> (Resource.Id.editText3);
            guessButton = FindViewById<Button> (Resource.Id.button1);

            //sets up a listener for the button
            guessButton.Click += (object sender, EventArgs e) => {

                guessString1 = *1 {// we have a hit
                    Console.WriteLine ("Yes " + guess + " matches");
                    int lastIndexOf = answerArrayList.LastIndexOf (guess);
                    answerArrayList.RemoveAt (lastIndexOf);
                    match++;
                } else {// no hit, the guess is wrong
                    Console.WriteLine ("Sorry, your guess is wrong. " + guess + " is not an answer");
                }
            }
            // updates the GUI
            matchLabel.Text = match.ToString();
            Console.WriteLine (match + " match(es) " + order + " order");
            // Check if the game is over
            if (order == 3 && match == 3) {
                scoreLabel.Text = "You scored : " + getScore ();
            }
        }
        // Helper function to score the user
        public int getScore(){ 
            int score = 110 - numberOfGuess*10;
            if (score < 0) {
                score = 0;
            }
            return score;
        }
    }
}

WorldClock

u651601f/WorldClock · GitHub

やっぱりアプリケーションを作りながら勉強するのが一番楽しいですね！

*1:EditText)guess1).Text; guessString2 = ((EditText)guess2).Text; guessString3 = ((EditText)guess3).Text; // to avoid parsing error (empty string to int) if ((!guessString1.Equals(""))){ guessArray [0] = Int32.Parse(guessString1); } if ((!guessString2.Equals(""))){ guessArray [1] = Int32.Parse(guessString2); } if ((!guessString3.Equals(""))){ guessArray [2] = Int32.Parse(guessString3); } Console.WriteLine("You guesses are "+ guessString1 + " " + guessString2 + " " + guessString3); checkGuesses(); }; } //Helper function that compares the guesses with the answers. It also update the GUI private void checkGuesses(){ //So that we can score the user numberOfGuess ++; int order = 0; int match = 0; //Check if the answers are in the right order for (int i=0; i < 3; i++){ Console.WriteLine("Checking if the order is correct. ANSWER: "+answerArray [i] + " and GUESS: " +guessArray [i]); if (answerArray [i] == guessArray [i]) { order++; Console.WriteLine ("This answer is correct. You score one point in 'order'"); } } // updates the GUI orderLabel.Text = order.ToString(); // the answers get fed into an ArrayList (so that we can resize it) foreach (int answer in answerArray) { answerArrayList.Add (answer); Console.WriteLine ("Putting " + answer + " inside ArrayList"); } // Checks whether the guesses match the answers foreach (int guess in guessArray) { Console.WriteLine ("Checking if :" + guess+ " is inside the ArrayList"); if (answerArrayList.Contains (guess