Tuple with fixed length and types in Typescript - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare a tuple with a fixed length of 2 and types string and number.

Typescript

let user: [string, [1]];

Drag options to blanks, or click blank then click option'

Anumber

Bboolean

Cstring

Dany

Attempts:

3 left

💡 Hint

Common Mistakes

Using string for both elements instead of number for the second.

Using any which is too general.

The tuple user has two elements: the first is a string, and the second is a number.

2fill in blank

medium

Complete the code to assign values to the tuple with fixed types string and number.

Typescript

user = [[1], 25];

Drag options to blanks, or click blank then click option'

A'Alice'

B25

Ctrue

Dnull

Attempts:

3 left

💡 Hint

Common Mistakes

Using a number or boolean instead of a string for the first element.

Forgetting to use quotes around the string.

The first element of the tuple must be a string, so 'Alice' is correct.

3fill in blank

hard

Fix the error in the tuple declaration to ensure fixed length and types string and boolean.

Typescript

let flags: [string, [1]];

Drag options to blanks, or click blank then click option'

Anumber

Bstring

Cany

Dboolean

Attempts:

3 left

💡 Hint

Common Mistakes

Using string or number instead of boolean.

Using any which is too general.

The tuple flags expects the second element to be a boolean type.

4fill in blank

hard

Fill both blanks to declare a tuple with fixed length 3 and types number, string, boolean.

Typescript

let data: [[1], [2], boolean];

Drag options to blanks, or click blank then click option'

Anumber

Bstring

Cboolean

Dany

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up the order of types.

Using any instead of specific types.

The tuple data has three elements: number, string, and boolean in order.

5fill in blank

hard

Fill all three blanks to create a tuple with fixed length and types: string, number, boolean.

Typescript

const info: [[1], [2], [3]] = ['John', 30, true];

Drag options to blanks, or click blank then click option'

Astring

Bnumber

Cboolean

Dany

Attempts:

3 left

💡 Hint

Common Mistakes

Using any instead of specific types.

Changing the order of types.

The tuple info has three elements: string, number, and boolean in that order.