Ruby characters

Question 1

puts

Answer 1

Shows whatever comes next and inserts a line break

Question 2

” “ - double quotes

Answer 2

Defines what will be written to the screen.

Question 3

• hashtag

Answer 3

Leaves comments that will not be read by the code.

Question 4

+ - plus

Answer 4

Addition between numbers

Question 5

• • minus

Answer 5

Subtract between numbers

Question 6

/ - slash

Answer 6

Division between numbers

Question 7

• • asterisk

Answer 7

Multiplication between numbers

Question 8

% - moduls

Answer 8

Grabs the remainder after a division

Answer 9

Determines if number on left is less than on the right

Question 10

>

• great than

Answer 10

Determines if number on left is greater than on the right

Answer 11

Determines if number on left is less than OR eaqual to number on the right

Question 12

> = - greater than equal

Answer 12

Determines if number on left is greater than OR eaqual to number on the right

Question 13

x = - variable

Answer 13

Sets the string on the left to whatever is on the right. Can use these in functions or in quotes.

Question 14

_ - underscore

Answer 14

Used to add a space when that is not allowed, ex. in variable names, or functions

Question 15

{x} - ?

Answer 15

Used with double quotes to use variables previously stated

Question 16

print

Answer 16

Command to write variables and text to the screen WITHOUT adding a new line at the end

Question 17

formatter

Answer 17

I have no idea

Question 18

\n - backslash n (escape)

Answer 18

New line character

Question 19

””” - triple quotes

Answer 19

Put at the beginning and end to write a bunch of text over several lines.

Question 20

\ - backslash (escape)

Answer 20

Allows the backslash to be read as a stand alone character instead of an escape

Question 21

' - Single Quote (escape)

Answer 21

Allows the single quote to be read as a stand alone character instead of an escape

Question 22

" - Double quote (escape)

Answer 22

Allows the double quote to be read as a stand alone character instead of an escape

Question 23

\a - bell (escape)

Answer 23

?

Question 24

\b backspace (escape)

Answer 24

?

Question 25

\f - formfeed (escape)

Answer 25

?

Question 26

\n - linefeed (escape)

Answer 26

Creates a new line inside quotes

Question 27

\r - carriage return (escape)

Answer 27

?

Question 28

\t - horizontal tab

Answer 28

Creates a tab inside quotes

Question 29

\uxxxx - 16-bit hex value (escape)

Answer 29

?

Question 30

\v - vertical tab (escape)

Answer 30

Inserts a vertical tab inside quotes

Question 31

\ooo - octal value (escape)

Answer 31

?

Question 32

\xhh - hex value (escape)

Answer 32

?

Question 33

gets

Answer 33

Prompts input, and sets it to a variable name

Question 34

.chomp

Answer 34

removes any escapes

Question 35

.to_i

Answer 35

Used to turn something into an integer

Question 36

ARGV - argument variable

Answer 36

Assigns variables by whatever is opened in the terminal. It is assigned from left to right.

Question 37

prompt

Answer 37

Prompts users for input? Can set with ‘=’ what should be shown.

Question 38

open() - command

Answer 38

Will open whatever file is placed inside the parentheses

Question 39

.read (command)

Answer 39

Reads the contents of the file. You can assign the result to a variable.

Question 40

.close (command)

Answer 40

Command to close a file

Question 41

.readline (command)

Answer 41

Reads just one line of a text file

Question 42

.truncate (command)

Answer 42

Empties the file. Watch out if you care about the file.

Question 43

.write(‘stuff’) (command)

Answer 43

Writes “stuff” to the file.

Question 44

‘w’ -

Answer 44

Used with the open(file, ‘w’) in order to open the file to be written.

Question 45

‘r’

Answer 45

Used with the open(file, ‘r’) in order to open the file to be read.

Question 46

target.write(x)

Answer 46

x is whatever you’d like to write

Question 47

def

Answer 47

Starts a function

Question 48

function
function_name(arg1, arg2)

Answer 48

a small program that you set, and then can call back. Can set the arguments in many different ways.

Question 49

end

Answer 49

Closes a function

Question 50

seek(0)

Answer 50

Will set the writing cursor to the very beginning of a document.

Question 51

+=

Answer 51

a = a + b

Question 52

return

Answer 52

Sets a variable to a be a value from a function