"RubyLanguage"

will

be raises an error

"Ruby

Language"

"Ruby.(Language)

will

be raises an error

"Ruby

1.31.3"

"Ruby

2.6"

"Ruby

#{'1.3' * 2}"

will

be raises an error

"Ruby

1.31.3"

"Ruby

2.6"

"Ruby

#{'1.3' * 2}"

they

are the same

double

quotes does not support string interpollation and does not escape sequences

single

quotes does not support string interpollation and does not escape sequences

single

quotes use for creating array of chars and double quotes for object of String

type

the

print method adds a new line to the end of each argument and puts does not

the

puts method adds a new line to the end of each argument and print does not

they

are the same

the

puts method gets input from the user and print method prints on a screen

4

1

7

Error

“Status”

“I am happy”

“ARGH”

Error

a set of code that can be added to one or more

classes by inheritance

a way of separating together methods, classes, and constants

a way of grouping

together methods, classes, and constants

a set of code that can be added to one or more

classes to add additional capabilities without using inheritance

binds together the data and functions that manipulate the data, and

that keeps both safe from outside interference and misuse. Its call hiding data

unbinds together the data and functions that manipulate the data, and

that keeps both safe from outside interference and misuse

binds together the data and functions that manipulate the data, and

that open them both for outside interference and misuse. Its call data opening

Class and methods

Procedure

Message passing

Encapsulation

Polymorphism