Session 2 Practice Tasks

The assignments listed here should take you approximately 2 hours.

To start this assignment, click the button in the upper right-hand corner that says Fork. This is now your copy of the document. Click the Edit button when you're ready to start adding your answers. To save your work, click the green button in the bottom right-hand corner. You can always come back and re-edit your gist.

1. Documentation and Googling (75 min)

Documentation of a langauge, framework, or tool is the information that describes its functionality. For this part of the practice tasks, you're going to practice digging into documentation and other reference material.

NOTE: The linked documentation for each question below is a good starting place, but you should also be practicing your Googling skills and sifting through the results to find relevant and helpful sites.

2. Data Types (15 min)

Imagine that you're taking your favorite board game and turning it into a computer-based game.

Name of board game: Pandemic: Legacy
Use the space below to categorize game data into each of the following data types. You should have a minimum of two pieces of data for each category.

String data: character names, names of cities, types of actions
Integer and/or float data: maximum number of actions per turn, actions used in current turn, tracker for number of outbreaks
Boolean data: cities are connected (true/false), disease is cured or eradicated (true/false)
Array data: cities that are currently "on the grid" and connected, number of disease/supply cubes per city, cards in deck
Hash or Object data: character profiles with scars/abilities, collection of available funded events with names and descriptions, collection of available unfunded events with names and descriptions

3. Iteration (30 min)

Create a list below of three real-life situations where iteration is used. For each situation, explain why it would be an example of iteration.
Playing a piece of music through one time - you go through what is essentially an array of notes, and for each one perform a the action of playing the note, on whatever instrument specified, and then stop when you get to the end
A bartender closing out people's tabs - the bartender goes through each card they have behind the bar and performs the action of charging an amount to the card based on what each individual owes
filling in a sudoku - you take each 3x3 box, row, and column, and fill them in with the numbers 1-9 such that each box, row, and column contain them only once, then stop when they're filled
Create a list below of three programming situations where iteration would be used. For each situation, explain why it would be an example of iteration.
giving a list of available goods in an online store - could loop through a list of inventory and subtract the number of items sold since the last restocking date and return the values that are greater than zero
a program/loop that plays an alarm at specified times - it would check the time repeatedly, and then perform a pre-determined action only when it returned the specified value
generating an appropriate greeting - display a greeting by accessing the appropriate data entered by a user into a form and inserting it into a preset string, saying "Hi, username! Welcome to site!" Could also check their birthday agains the date and give them a birthday greeting

4. Modify your Bash Profile (10 min)

Watch this video and follow each step to modify your own bash profile. As mentioned in the video, you will need this snippet below:

# get current branch in git repo
function parse_git_branch() {
  BRANCH=`git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/\1/'`
  if [ ! "${BRANCH}" == "" ]
  then
    STAT=`parse_git_dirty`
    echo "[${BRANCH}${STAT}]"
  else
    echo ""
  fi
}

# get current status of git repo
function parse_git_dirty {
  status=`git status 2>&1 | tee`
  dirty=`echo -n "${status}" 2> /dev/null | grep "modified:" &> /dev/null; echo "$?"`
  untracked=`echo -n "${status}" 2> /dev/null | grep "Untracked files" &> /dev/null; echo "$?"`
  ahead=`echo -n "${status}" 2> /dev/null | grep "Your branch is ahead of" &> /dev/null; echo "$?"`
  newfile=`echo -n "${status}" 2> /dev/null | grep "new file:" &> /dev/null; echo "$?"`
  renamed=`echo -n "${status}" 2> /dev/null | grep "renamed:" &> /dev/null; echo "$?"`
  deleted=`echo -n "${status}" 2> /dev/null | grep "deleted:" &> /dev/null; echo "$?"`
  bits=''
  if [ "${renamed}" == "0" ]; then
    bits=">${bits}"
  fi
  if [ "${ahead}" == "0" ]; then
    bits="*${bits}"
  fi
  if [ "${newfile}" == "0" ]; then
    bits="+${bits}"
  fi
  if [ "${untracked}" == "0" ]; then
    bits="?${bits}"
  fi
  if [ "${deleted}" == "0" ]; then
    bits="x${bits}"
  fi
  if [ "${dirty}" == "0" ]; then
    bits="!${bits}"
  fi
  if [ ! "${bits}" == "" ]; then
    echo " ${bits}"
  else
    echo ""
  fi
}

export PS1="\u\w\`parse_git_branch\`$ "

5. Questions/Comments/Confusions

If you have any questions, comments, or confusions from the any of the readings that you would an instructor to address, list them below:

What is the %r{\s*} in the split section of the ruby doc page you gave us?
A friend already put zsh/oh my zsh on my terminal so I'm not sure if the bash profile update will do what it's supposed to!

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