TypeScript for Beginners - Using a Data Type with the Rest Parameter

TypeScript for Beginners - Using a Data Type with the Rest Parameter

Assessment

Interactive Video

Information Technology (IT), Architecture

University

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

The video tutorial explains the concept of rest parameters in functions, emphasizing that they should always be the last parameter in the function's parameter list to avoid compilation errors. It also discusses how to restrict rest parameters to specific types, such as arrays, to ensure proper function execution. The tutorial provides examples and highlights common mistakes, such as incorrect parameter positioning and type usage.

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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary rule regarding the placement of rest parameters in a function's parameter list?

They must be the last parameter.

They can be placed anywhere.

They must be the first parameter.

They should be in the middle of the list.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens if you place a rest parameter at the beginning of a function's parameter list?

The rest parameter will be ignored.

The function will return undefined.

It will cause a compilation error.

The function will execute normally.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which keyboard shortcut can be used to undo changes if a compilation error occurs?

Control X

Control Z

Control Y

Control C

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What type must a rest parameter be restricted to?

String

Array

Boolean

Object

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How can you restrict a rest parameter to accept only numbers?

Use nums: number

Use nums: string[]

Use nums: number[]

Use nums: boolean[]

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