What are the types of while loops?

There are three types of while loops. Iterative loop: This type of loop continues to execute as long as the condition is true. Conditional loop: This type of loop executes when the condition is true. Infinite loop: This type of loop never ends and will continue to execute until a break statement is encountered or an exception occurs.

How is a while loop different from other loops?

A while loop can be used to iterate over a list of items. For example, the following code will print out the numbers from 1 to 10: var numbers = [1,2,3]; while (numbers.length > 0) { console.log(numbers[0]); numbers = numbers.slice(1); }

Course Content

Introduction to Ruby

2m 6s

How to use LearnVern

3m 8s

What is RVM?

7m 37s

How to Install RVM & Ruby Practical

4m 25s

Assignmen of installation version

37s

RVM Functions

3m 13s

RVM Functions Practicals

3m 12s

RVM Assignment-1

17s

RVM Assignment-2

12s

RVM Quiz

Variables Introductions

44s

Local & Global Variables

2m 31s

Instance & Class Variables

4m 2s

Constant

1m 30s

Variables Quiz

Boolean

2m 46s

Numbers

2m 28s

Symbols

3m 43s

Arrays

5m 28s

Hashes

6m 43s

Strings

2m 17s

Object Oriented

2m 26s

Class & Objects

2m 20s

Initializer Method

2m 25s

Instance Method

1m 45s

Initializer Instance Method Practical

4m 32s

Assignment of Initialize Method

38s

Assignment of Instance method

26s

Class Method

2m 19s

Class Method Practical

3m 16s

Class & Methods

5m 6s

Assignment of Class Method

24s

Attribute

4m 56s

Assignment of attr_reader

18s

Assignment of attr_assessor

16s

Assignment of att_write

17s

Object Oriented Quiz

Class and Methods Quiz

02h 46m 39s

Control_Structure Intro

1m 17s

If Else Statement

5m 28s

Assignment of If Else Statement

31s

Unless Statement

4m 58s

Case Statement

3m 55s

Assignment of Case Statement

24s

Intro + While Loop

3m 9s

Assignment of While Loop

17s

Until Loop

3m 24s

Assignment of Until Loop

29s

For Loop

3m 45s

Assignment of For Loop

21s

Break Statement

3m 48s

Assignment of Break Statement

30s

Next Statement

3m 58s

Assignment of Next Statement

18s

Redo Statement

4m 16s

Assignment of Redo Statement

16s

Assignment of Control Structure

14s

Ruby Control Structure Quiz

Introduction of Comments

6m 48s

Assignment of Single line Comments

38s

Assignment of Multi line Comments

26s

Comments Quiz

Arithmetic Operators

2m 39s

Arithmetic Operator Example

8m 6s

Assignment of Arithmetic Operators

14s

Assignment Operators

3m 47s

Assignment Operator Example

2m 7s

Assignment of Assignment Operator

15s

Logical Operators

4m 18s

OR Operator

4m 9s

NOT Operator

4m 55s

Comparison Operators

5m 38s

Comparison Operators Example-1

9m 54s

Comparison Operators Example-2

9m 59s

Assignment of Comparision Operators

25s

Assignment 2 of Arithmetic Operators, Comparision Operators

13s

Assignment 3 of Arithmetic Operators, Comparision Operators

13s

Assignment 5 of Arithmetic Operators, Comparision Operators

19s

Bitwise Operators

2m 56s

And Operator Example

6m 11s

OR Operator Example

4m 7s

XOR Operator

4m 27s

Assignment of Bitwise Operator

31s

Ones Complement Operator

1m 22s

Binary Left Shift Operator

2m 59s

Binary Right Shift Operator

3m 35s

Ternary Operator

3m 14s

Ternary Operator Example

3m 12s

Range Operators

2m 2s

Range Operator Example

4m 27s

Assignment of Range Operator

19s

Operators Quiz

10m

Introduction to Array

12m 39s

Create Array

2m 50s

Access Elements from Array

2m 2s

Methods of Array

6m 33s

Add Element in Array

3m 47s

Remove Element from Array

3m 38s

Assignment of Array

39s

Assignment of Create Array

26s

Assignment of Add element

41s

Array Quiz

Introduction of Hashes

58s

Create Hash

5m 38s

Assignment of Create Hash

37s

Access Elements from Hash

4m 41s

Methods of Hash + Key Method

1m 47s

Hash Methods of values

2m 2s

Hash Methods of clear

2m 11s

Hash Method of delete

3m 21s

Hash Methods of empty

2m 58s

Hash Methods of length

2m 1s

Hash Methods of .has key(key) OR .key(key)

4m 1s

Hash Methods of has value(value) OR .value(value)

4m 40s

Hash Method of Index(value)

2m 59s

Hash Method of Size

1m 58s

Hashes Quiz

Introduction of Blocks

8m 22s

Simple Block

2m 1s

Block With Single Arguments

2m 27s

Block With Multiple Arguments

2m 59s

Assignment of Block

58s

Block Variable Scope

5m 56s

Block Local Scope Variables

2m 56s

Block Global Scope Variables

2m 58s

Assignment of Block Variable

47s

Blocks Quiz

Introduction of Exception

1m 23s

Handling Exceptions

4m 22s

Handling Exceptions Example

8m 43s

Assignment of Handling Exceptions

30s

Retry Statement

2m 59s

Retry Statement Example

3m 22s

Ensure Statement

2m 37s

Ensure Statement Example

4m 7s

Exceptions Assignment-2

22s

Exceptions Assignment-3

20s

Ruby Final Quiz

16h 45m

Assignment of While Loop

Ruby Programming Course Control Structures

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Discussion

Course Content

Introduction to Ruby

2m 6s

How to use LearnVern

3m 8s

What is RVM?

7m 37s

How to Install RVM & Ruby Practical

4m 25s

Assignmen of installation version

37s

RVM Functions

3m 13s

RVM Functions Practicals

3m 12s

RVM Assignment-1

17s

RVM Assignment-2

12s

Variables Introductions

44s

Local & Global Variables

2m 31s

Instance & Class Variables

4m 2s

Constant

1m 30s

Boolean

2m 46s

Numbers

2m 28s

Symbols

3m 43s

Arrays

5m 28s

Hashes

6m 43s

Strings

2m 17s

Object Oriented

2m 26s

Class & Objects

2m 20s

Initializer Method

2m 25s

Instance Method

1m 45s

Initializer Instance Method Practical

4m 32s

Assignment of Initialize Method

38s

Assignment of Instance method

26s

Class Method

2m 19s

Class Method Practical

3m 16s

Class & Methods

5m 6s

Assignment of Class Method

24s

Attribute

4m 56s

Assignment of attr_reader

18s

Assignment of attr_assessor

16s

Assignment of att_write

17s

Control_Structure Intro

1m 17s

If Else Statement

5m 28s

Assignment of If Else Statement

31s

Unless Statement

4m 58s

Case Statement

3m 55s

Assignment of Case Statement

24s

Intro + While Loop

3m 9s

Assignment of While Loop

17s

Until Loop

3m 24s

Assignment of Until Loop

29s

For Loop

3m 45s

Assignment of For Loop

21s

Break Statement

3m 48s

Assignment of Break Statement

30s

Next Statement

3m 58s

Assignment of Next Statement

18s

Redo Statement

4m 16s

Assignment of Redo Statement

16s

Assignment of Control Structure

14s

Introduction of Comments

6m 48s

Assignment of Single line Comments

38s

Assignment of Multi line Comments

26s

Arithmetic Operators

2m 39s

Arithmetic Operator Example

8m 6s

Assignment of Arithmetic Operators

14s

Assignment Operators

3m 47s

Assignment Operator Example

2m 7s

Assignment of Assignment Operator

15s

Logical Operators

4m 18s

OR Operator

4m 9s

NOT Operator

4m 55s

Comparison Operators

5m 38s

Comparison Operators Example-1

9m 54s

Comparison Operators Example-2

9m 59s

Assignment of Comparision Operators

25s

Assignment 2 of Arithmetic Operators, Comparision Operators

13s

Assignment 3 of Arithmetic Operators, Comparision Operators

13s

Assignment 5 of Arithmetic Operators, Comparision Operators

19s

Bitwise Operators

2m 56s

And Operator Example

6m 11s

OR Operator Example

4m 7s

XOR Operator

4m 27s

Assignment of Bitwise Operator

31s

Ones Complement Operator

1m 22s

Binary Left Shift Operator

2m 59s

Binary Right Shift Operator

3m 35s

Ternary Operator

3m 14s

Ternary Operator Example

3m 12s

Range Operators

2m 2s

Range Operator Example

4m 27s

Assignment of Range Operator

19s

Introduction to Array

12m 39s

Create Array

2m 50s

Access Elements from Array

2m 2s

Methods of Array

6m 33s

Add Element in Array

3m 47s

Remove Element from Array

3m 38s

Assignment of Array

39s

Assignment of Create Array

26s

Assignment of Add element

41s

Introduction of Hashes

58s

Create Hash

5m 38s

Assignment of Create Hash

37s

Access Elements from Hash

4m 41s

Methods of Hash + Key Method

1m 47s

Hash Methods of values

2m 2s

Hash Methods of clear

2m 11s

Hash Method of delete

3m 21s

Hash Methods of empty

2m 58s

Hash Methods of length

2m 1s

Hash Methods of .has key(key) OR .key(key)

4m 1s

Hash Methods of has value(value) OR .value(value)

4m 40s

Hash Method of Index(value)

2m 59s

Hash Method of Size

1m 58s

Introduction of Blocks

8m 22s

Simple Block

2m 1s

Block With Single Arguments

2m 27s

Block With Multiple Arguments

2m 59s

Assignment of Block

58s

Block Variable Scope

5m 56s

Block Local Scope Variables

2m 56s

Block Global Scope Variables

2m 58s

Assignment of Block Variable

47s

Introduction of Exception

1m 23s

Handling Exceptions

4m 22s

Handling Exceptions Example

8m 43s

Assignment of Handling Exceptions

30s

Retry Statement

2m 59s

Retry Statement Example

3m 22s

Ensure Statement

2m 37s

Ensure Statement Example

4m 7s

Exceptions Assignment-2

22s

Exceptions Assignment-3

20s

FAQs

The while loop in Ruby is used to repeat a task until a certain expression is assessed as false.

There are three types of while loops.

Iterative loop: This type of loop continues to execute as long as the condition is true.
Conditional loop: This type of loop executes when the condition is true.
Infinite loop: This type of loop never ends and will continue to execute until a break statement is encountered or an exception occurs.

A while loop is a programming construct that allows code to be executed repeatedly until the expression evaluates to false. A do while loop is a programming construct that allows code to be executed repeatedly until the expression evaluates to true.

A while loop can be used to iterate over a list of items. For example, the following code will print out the numbers from 1 to 10:

var numbers = [1,2,3];
while (numbers.length > 0) {
console.log(numbers[0]);
numbers = numbers.slice(1);
}

The advantage of using a while loop is that it can be used when we need to execute a set of instructions repeatedly. This can be done in two ways: one is by incrementing or decrementing the value of the variable and checking for its equality with another value, and the other way is by checking for some event such as keyboard input.