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@malandrina
Forked from dbc-challenges/card.rb
Created October 27, 2012 00:00
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FlashCardinator
class FileReader
def initialize(file)
@file = file
end
def read_file
@dictionary = {}
File.open(@file, "r").each do |line|
line.gsub!(/\\/, "")
split_line = line.chomp.split("\t")
key, value = split_line[0], split_line[1]
@dictionary.store(key, value)
end
@dictionary
end
end
require 'simplecov'
SimpleCov.start
require "./filereader"
describe FileReader do
context "#initialize" do
it "should be initialized with a file" do
expect {FileReader.new}.to raise_error
end
end
context "#read_file" do
before do
@reader = FileReader.new('flashcards_data.txt')
end
it "should read a file and create an collection of terms and definitions" do
read_file = @reader.read_file
read_file.keys.should include "yield"
end
end
end
class FlashCard
attr_reader :term, :definition
def initialize(term='', definition = '')
@term = term
@definition = definition
end
end
class FlashCardDeck
#attr_reader :cards
def initialize
@cards = []
end
def empty?
@cards.empty?
end
def add_card(card)
raise 'Duplicate card' if @cards.include?(card) or card == nil
@cards << card
end
def shuffle!
@cards.shuffle!
end
def size
@cards.size
end
end
require 'simplecov'
SimpleCov.start
require "./flashcard_deck"
require "./flashcard"
describe FlashCardDeck do
before do
@deck = FlashCardDeck.new
end
context "#initialize" do
it "is empty" do
@deck.should be_empty
end
end
context "#add_card" do
before do
@card = FlashCard.new
end
it "does not add duplicate cards to the deck" do
@deck.add_card(@card)
expect{@deck.add_card(@card)}.to raise_error
end
it "adds a card to the deck" do
expect{@deck.add_card(@card)}.to change(@deck, :size).by 1
end
end
context "#shuffle!" do
it "shuffles the cards in the deck" do
@deck.should_not eq(@deck.shuffle!)
end
end
end
require 'simplecov'
SimpleCov.start
require "./flashcard"
describe FlashCard do
context "#initialize" do
before do
@flashcard = FlashCard.new
end
it "is initialized with a term" do
@flashcard.term.should_not be_nil
end
it "is initialized with a definition" do
@flashcard.definition.should_not be_nil
end
it "is initialized with a term that is passed as a parameter" do
flashcard2 = FlashCard.new("hello")
flashcard2.term.should eq "hello"
end
it "is initialized with a definition that is passed as a parameter" do
flashcard2 = FlashCard.new("hello", "greeting")
flashcard2.definition.should eq("greeting")
end
end
end
alias To create a second name for the variable or method.
and A command that appends two or more objects together.
BEGIN Designates code that must be run unconditionally at the beginning of the program before any other.
begin Delimits a "begin" block of code, which can allow the use of while and until in modifier position with multi-line statements.
break Gives an unconditional termination to a code block, and is usually placed with an argument.
case starts a case statement; this block of code will output a result and end when it's terms are fulfilled, which are defined with when or else.
class Opens a class definition block, which can later be reopened and added to with variables and even functions.
def Used to define a function.
defined? A boolean logic function that asks whether or not a targeted expression refers to anything recognizable in Ruby; i.e. literal object, local variable that has been initialized, method name visible from the current scope, etc.
do Paired with end, this can delimit a code block, much like curly braces; however, curly braces retain higher precedence.
else Gives an "otherwise" within a function, if-statement, or for-loop, i.e. if cats = cute, puts "Yay!" else puts "Oh, a cat."
elsif Much like else, but has a higher precedence, and is usually paired with terms.
END Designates, via code block, code to be executed just prior to program termination.
end Marks the end of a while, until, begin, if, def, class, or other keyword-based, block-based construct.
ensure Marks the final, optional clause of a begin/end block, generally in cases where the block also contains a rescue clause. The code in this term's clause is guaranteed to be executed, whether control flows to a rescue block or not.
false denotes a special object, the sole instance of FalseClass. false and nil are the only objects that evaluate to Boolean falsehood in Ruby (informally, that cause an if condition to fail.)
for A loop constructor; used in for-loops.
if Ruby's basic conditional statement constructor.
in Used with for, helps define a for-loop.
module Opens a library, or module, within a Ruby Stream.
next Bumps an iterator, or a while or until block, to the next iteration, unconditionally and without executing whatever may remain of the block.
nil A special "non-object"; it is, in fact, an object (the sole instance of NilClass), but connotes absence and indeterminacy. nil and false are the only two objects in Ruby that have Boolean falsehood (informally, that cause an if condition to fail).
not Boolean negation. i.e. not true # false, not 10 # false, not false # true.
or Boolean or. Differs from || in that or has lower precedence.
redo Causes unconditional re-execution of a code block, with the same parameter bindings as the current execution.
rescue Designates an exception-handling clause that can occur either inside a begin<code>/<code>end block, inside a method definition (which implies begin), or in modifier position (at the end of a statement).
retry Inside a rescue clause, causes Ruby to return to the top of the enclosing code (the begin keyword, or top of method or block) and try executing the code again.
return Inside a method definition, executes the ensure clause, if present, and then returns control to the context of the method call. Takes an optional argument (defaulting to nil), which serves as the return value of the method. Multiple values in argument position will be returned in an array.
self The "current object" and the default receiver of messages (method calls) for which no explicit receiver is specified. Which object plays the role of self depends on the context.
super Called from a method, searches along the method lookup path (the classes and modules available to the current object) for the next method of the same name as the one being executed. Such method, if present, may be defined in the superclass of the object's class, but may also be defined in the superclass's superclass or any class on the upward path, as well as any module mixed in to any of those classes.
then Optional component of conditional statements (if, unless, when). Never mandatory, but allows for one-line conditionals without semi-colons.
true The sole instance of the special class TrueClass. true encapsulates Boolean truth; however, <emph>all</emph> objects in Ruby are true in the Boolean sense (informally, they cause an if test to succeed), with the exceptions of false and nil.
undef Undefines a given method, for the class or module in which it's called. If the method is defined higher up in the lookup path (such as by a superclass), it can still be called by instances classes higher up.
unless The negative equivalent of if. i.e. unless y.score > 10 puts "Sorry; you needed 10 points to win." end.
until The inverse of while: executes code until a given condition is true, i.e., while it is not true. The semantics are the same as those of while.
when Same as case.
while Takes a condition argument, and executes the code that follows (up to a matching end delimiter) while the condition is true.
yield Called from inside a method body, yields control to the code block (if any) supplied as part of the method call. If no code block has been supplied, calling yield raises an exception.
require './main'
class Interface
def go
game_deck = Main.new('flashcards_data.txt').add_cards
game_deck = Hash[game_deck.to_a.shuffle!]
game_deck.each do |term, definition|
guess_counter = 1
puts definition
puts "Guess:"
answer = gets.chomp
break if answer == "quit"
while true
#answer = gets.chomp
if answer == term
puts "Your answer is correct!"
puts ""
break
elsif guess_counter < 3
puts "Incorrect, guess again:"
answer = gets.chomp
guess_counter += 1
else
puts "The correct answer was: #{term}"
puts ""
break
end
end
end
end
end
interface = Interface.new
interface.go
require "./flashcard_deck"
require './flashcard'
require "./filereader"
class Main
attr_reader :deck, :file
def initialize(file)
@deck = FlashCardDeck.new
@file = file
end
def card(term, definition)
FlashCard.new(term, definition)
end
def flashcard_data
FileReader.new(file).read_file
end
def add_cards
flashcard_data.each do |term, definition|
@deck.add_card(card(term, definition))
end
end
end
require 'simplecov'
SimpleCov.start
require "./main"
require './flashcard_deck'
describe Main do
let(:main) {Main.new("flashcards_data.txt")}
let(:deck) {FlashCardDeck.new}
context "#initialize" do
it "creates a new deck" do
main.deck.should_not be_nil
end
end
context "#flashcard" do
it "makes a flashcard" do
main.card('blah', 'asdf').should_not be_nil
end
end
context "#flashcard_data" do
it "pulls in the data that will be used to make the cards" do
main.flashcard_data["alias"].should eq "To create a second name for the variable or method."
end
end
context "#add_cards" do
it "adds cards to the deck" do
main.add_cards
main.deck.empty?.should eq false
end
end
end
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