Caroline Artz carolineartz

## gist:530ede8936312d6e7163

      
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                carolineartz
                / gist:530ede8936312d6e7163
            
            
              Last active
              July 4, 2017 21:50
                — forked from lfender6445/gist:9919357
            
          
    Pry Cheat Sheet

Youtube Tutorial 2013
Command Line


pry -r ./config/app_init_file.rb - load your app into a pry session (look at the file loaded by config.ru)
pry -r ./config/environemtn.rb - load your rails into a pry session

Debugger


## SassMeister-input.scss
// ----
// Sass (v3.3.0.rc.2)
// Compass (v1.0.0.alpha.17)
// ----

//
// map-fetch($map, $keys)
//
// An easy way to fetch a deep value in a multi-level map. Works much like
// map-get() except that you pass multiple keys as the second parameter to

## 0.2.2-ruby_and_databases.rb
require 'sqlite3'


$db = SQLite3::Database.open 'congress_poll_results.db'

def print_arizona_reps
  puts 'AZ REPRESENTATIVES'
  az_reps = $db.execute("SELECT name FROM congress_members WHERE location = 'AZ'")
  az_reps.each { |rep| puts rep }
end

## README.md

      
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                carolineartz
                / README.md
            
            
              Created
              April 10, 2014 21:26
                — forked from mattsears/README.md
            
          
    Todo.rb

Todo.rb is a simple command-line tool for managing todos. It's minimal,
straightforward, and you can use it with your favorite text editor.
Getting Started

Todo.rb doesn't require any third-party gems so you can copy the file anywhere
and use it as long as it's executable:

  
## p0_review_playlist_challege.rb
# Your awesome code goes here!
class Song
  attr_reader :track, :artist
  def initialize(track, artist)
    @track = track
    @artist = artist
  end

  def play
    puts 'NOW PLAYING' + ' ' + self.track + '-' + self.artist

## student-original.rb
class Student
  attr_accessor :scores, :ssn, :first_name

  def initialize(fname, ssn, scores)
    @first_name = fname
    @ssn = ssn
    @scores = scores
  end

  def average

## recursive_methods.rb
#Output: number of  possible teams

def choose_team(n, k)
  return n if k == 1
  return 0 if k == 0 || n == 0
  choose_team(n-1,k-1) + choose_team(n-1,k)
end


p choose_team(6,1) == 6

## shBrushRuby.js
/**
 * SyntaxHighlighter
 * http://alexgorbatchev.com/
 *
 * SyntaxHighlighter is donationware. If you are using it, please donate.
 * http://alexgorbatchev.com/wiki/SyntaxHighlighter:Donate
 *
 * @version
 * 2.0.320 (May 03 2009)
 *

## print_times_table.rb
# PSEUDOCODE

# INPUT 	rows: integer (0 or positive) for number of rows (/columns)
# OUPUT		times table: printed times table with the input number of rows/columns
# STEPS
# 			SET a collection with elements 1..rows
# 			SET counter to 1
# 			WHILE counter is less than/equal to rows
# 				ITERATE over elements of collection
# 					MULTIPLY element by counter

## 0.4.2-Debugging_Drill-Triangle_Tester-gist.rb
=begin
As you are debugging, ask yourself:
* Do you have enough information to decipher the problem?
* Is the error message referencing a line in your file, or a different file?
* Is there a methodology that you are following to systematically tackle these bugs?  What is a step by step approach?


###2) Decipher the bugs
For each bug (there are three initial bugs that cause interpreter errors), answer the following questions:
	// ----
	// Sass (v3.3.0.rc.2)
	// Compass (v1.0.0.alpha.17)
	// ----

	//
	// map-fetch($map, $keys)
	//
	// An easy way to fetch a deep value in a multi-level map. Works much like
	// map-get() except that you pass multiple keys as the second parameter to
	require 'sqlite3'


	$db = SQLite3::Database.open 'congress_poll_results.db'

	def print_arizona_reps
	puts 'AZ REPRESENTATIVES'
	az_reps = $db.execute("SELECT name FROM congress_members WHERE location = 'AZ'")
	az_reps.each { \|rep\| puts rep }
	end
	# Your awesome code goes here!
	class Song
	attr_reader :track, :artist
	def initialize(track, artist)
	@track = track
	@artist = artist
	end

	def play
	puts 'NOW PLAYING' + ' ' + self.track + '-' + self.artist
	class Student
	attr_accessor :scores, :ssn, :first_name

	def initialize(fname, ssn, scores)
	@first_name = fname
	@ssn = ssn
	@scores = scores
	end

	def average
	#Output: number of possible teams

	def choose_team(n, k)
	return n if k == 1
	return 0 if k == 0 \|\| n == 0
	choose_team(n-1,k-1) + choose_team(n-1,k)
	end


	p choose_team(6,1) == 6
	/**
	* SyntaxHighlighter
	* http://alexgorbatchev.com/
	*
	* SyntaxHighlighter is donationware. If you are using it, please donate.
	* http://alexgorbatchev.com/wiki/SyntaxHighlighter:Donate
	*
	* @version
	* 2.0.320 (May 03 2009)
	*
	# PSEUDOCODE

	# INPUT rows: integer (0 or positive) for number of rows (/columns)
	# OUPUT times table: printed times table with the input number of rows/columns
	# STEPS
	# SET a collection with elements 1..rows
	# SET counter to 1
	# WHILE counter is less than/equal to rows
	# ITERATE over elements of collection
	# MULTIPLY element by counter
	=begin
	As you are debugging, ask yourself:
	* Do you have enough information to decipher the problem?
	* Is the error message referencing a line in your file, or a different file?
	* Is there a methodology that you are following to systematically tackle these bugs? What is a step by step approach?


	###2) Decipher the bugs
	For each bug (there are three initial bugs that cause interpreter errors), answer the following questions: