Pair Programming Session

Suggested time taken: 20-30 mins for amateur programmers

Program outline

tictactoe.py is a python program that allows 2 users to play the nostalgic game Tic Tac Toe.

Users take turns to input board numbers to update the board.

Data structure

data = {
  'board': [0,1,2,3,4,5,6,7,8],
  'moves':0,
  'end': False,
  'winner': None
}

data - a python object to store all data

board - the current tic tac toe board

moves - the current number of moves elapsed

winner - the winner of the game

Tasks outline

For this workshop, you and your partner will write 2 different parts of the same program to complete tictactoe.py. One of you will complete one of the tasks. You are not allowed to complete both tasks by yourself, but both of you should work together to solve problems.

The first two pairs of programmers will be given prizes.

Setting up

Task 1A (1 person)

Clone the github repository on our club's organisation.

git clone https://github.com/rcltech/github_workshop.git

Remove git and re-initalize git

cd github_workshop
rm -rf .git
git init

Create a new repository on your dashboard

Add new remote link (change link to your repo link)

git remote add origin link

Initial commit and push

git add -A
git commit -m 'initial commit'
git push -u origin master

Task 1B (another person)

Fork the newly created repository

Clone the forked repository

git clone link

Task 2 (together)

Discuss with your partner about the program structure, particularly the delegation of task. Work on solving any difficulties together as well.

Task A (1 person)

In the function checkForWinner, some winning conditions (in a 1D array) have been written for you. Within this function, the data object has been copied to newData; use newData instead of data, because you don't want to accidentally change the original data object.

To do:

• write a for loop to check each condition in conditions against the board.
• when a winner is found,
  • make newData['winner'] = the winner you have found
  • set newData['end'] to be true
  • return newData as soon as a winner is found
• if no winner is found, do not return anything, let the function continue its flow

Task B (another person)

The function updateBoard is to update the tic tac toe board according to who's turn is it, and which position the user has chosen.

Function input parameters:

• currentTurn refers to a character which is either 'X' or 'O', update the board using this variable
• userInput refers to the number that the user entered during this turn

To do:

• figure out a way to update the board

Collaboration

Both of you push your code respectively. git push -u origin master

Person who completed Task 1B, create a pull request. We will guide you here.

Person who completed Task 1A, wait for the pull request, and merge the request into your version of code. We will guide you in resolving conflicts.

Completion

Congratulations, you have actually collaborated IN REAL TIME!