Basic Code Academy

Question 0

What is ruby?

Answer 0

A programming language

Question 1

To print something on the computer

Answer 1

Puts

Question 2

What is rails?

Answer 2

Rails is framework to build Webb apps. Like the frames of a house already in place so one can focusing on building the details.

Question 3

What is an web app?

Answer 3

Any software that runs in a web browser

Question 4

name 5 objects

Answer 4

Strings
Numbers
Booleans
Arrays
Hashes

Question 5

Name three types of methods

Answer 5

Methods
Loops
Control flow

Question 6

Name three types of classes

Answer 6

Classes
Attributes
Instance variables

Question 7

What are strings

Answer 7

Words or numbers between quotes

Question 8

What are numbers (object)

Answer 8

Numbers. Ruby has two types, floats: numbers with decimals like 4.3. And integers: whole numbers, either positive or negative like 75 or -10.

Question 9

What are booleans

Answer 9

True or false statements. 1==1 is true. 1==5 is a false statement.

Question 10

How is a variable with strings declared?

Answer 10

a = "apple".
a = "12"

Question 11

How is a variable with numbers object declared?

Answer 11

A = 12
A = 12.5
A = 22 + 12.5

Question 12

How is a variable with booleans declared? True and false

Answer 12

A = (1 == 1) 
A = (1 == 6)

True
False

Question 13

What is arrays?

Answer 13

An object. Its a list of objects too.

Question 14

How is an array created?

Answer 14

By declaring array name and listing the objects between brackets:

A = [“Sebastian”, “Jonas”, “Lisa”]

Question 15

What is an object in an array list called?

Answer 15

An element

Question 16

How is an element in an array accessed?

Answer 16

Array name and the index number:
Puts a[0]
=> “Sebastian”

Question 17

What are hashes?

Answer 17

An object. Helps store information as pairs, key and value.

Question 18

How are hashes declared?

Answer 18

Menu = {“pizza” => 14.00, “soda” => 2.00, “pasta” => 8.00}

Question 19

What type of object is declared? Which is key and which is value?

Menu = {“pizza” => 14.00, “soda” => 2.00, “pasta” => 8.00}

Answer 19

Menu hash
The foods key
The prices value

Question 20

How is the value of a key in a hash object accessed?

Answer 20

From
Menu = {“pizza” => 14.00, “soda” => 2.00, “pasta” => 8.00}

Menu[“pasta”]

Result

=> 8.00

Question 21

What is a variable?

Answer 21

They are used to store objects so we can access them again. Any object can be stored as a variable.

Question 22

What’s the terminal command to list the content of the current directory?

Answer 22

ls

Question 23

What’s the terminal command to list the content of the current directory, including hidden files?

Answer 23

ls -a

Question 24

How is got configured on a new computer?

Answer 24

git config –global user.name “your name”

git config –global user.email “email”

Question 25

How is git setup for a new project?

Answer 25

Go to folder in terminal.

git init

Question 26

How is a project saved to git?

Answer 26

git status //shows what files you’re tracking

git add . //stage

git commit -am “a name for personal reference”

Question 27

How can you get back something you shouldn’t have deleted with git?

Answer 27

git add .

git checkout -f

Question 28

What’s the terminal command to see where you are?

Answer 28

pwd

Question 29

how do you check your rails version?

Answer 29

rails -v

Question 30

How do you create a new rails application?

Answer 30

rails new examplename

cd examplename

Question 31

How do you run the rails server?

Answer 31

rails server

Question 32

What are the four steps to upload changes to github?

Answer 32

Git status

Git add .

Git commit -am “ref name”

Git push

Question 33

How can u move straight to desktop folder from anywhere, through the terminal?

Answer 33

cd ~/desktop

Question 34

How do you create a new page?

Answer 34

Rails generate controller pages home

Question 35

Where is the default url location of a newly created page?

Answer 35

Localhost:3000/pages/pagename

Question 36

Where do you update the text on your page?

Answer 36

App/views/pages/pagename.html.erb

Question 37

In what file do you handle directs of visitors?

Answer 37

Config/routes.rb

Question 38

How can you change the default location of the home page from localhost:3000/pages/home to localhost:3000 (root)

Answer 38

Go to config/routes.rb
Replace
get "pages/home"
With
Root "pages#home"

Question 39

How do you create a page manually?

Answer 39

1. Go to app-controllers:pages_controller.rb

Add:
def name of page
end

2. Go to app-views-pages.
   Create a new file: name of page.html.erb
3. Go to config:routes.rb
   Add: get “pages/sebastian”