Intermediate Algorithm Scripting - Arguments Optional

[bushra.ghames2707]

Hello everyone, i need someone to explain to me why in FCC solution they wrote first and _$Second in parentheses?

if (typeof (first) === “number” ) 
If (typeof (_&Second) === “number) return first + _$Second;

I WROTE THE SOLUTION LINK BELOW, AND I WROTE THE FULL CODE

freeCodeCamp Challenge Guide: Arguments Optional

Arguments Optional Problem Explanation It can be quite complicated to understand what needs to be done. There are always many ways to do something when coding but regardless of the algorithm used, we have to create a program that does the following: It has to add two numbers passed as parameters and return the sum. It has to check if any of the numbers are actual numbers, otherwise return undefined and stop the program right there. It has to check if it has one or two arguments passed. Mor…

function addTogether() {
const [first, _$Second] = arguments;
if (typeof (first) === “number” ) {
If (typeof (_&Second) === “number) return first + _$Second;
If (arguments.length === 1 ) return (_$Second) => addTogether(first, _$Second);
}}

addTogether(2,3);

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Challenge Information:

Intermediate Algorithm Scripting - Arguments Optional

freeCodeCamp.org

[bappyasif]

@bushra.ghames2707

FCC solution they wrote first and _$Second in parentheses?

• are you sure?! cause im not seeing it from their provided three solutions!!
• also you can name a variable in many ways!! you can look it up about “naming convention” of variables

happy coding

[bushra.ghames2707]

@bappyasif

are you sure?! cause im not seeing it from their provided three solutions!!

They wrote second, i accidentally wrote it like that, but that’s was not my point.

MY POINT IS.

why did they wrote typeof (first)? Why did they put the variable inside parentheses

[bappyasif]

@bushra.ghames2707

why did they wrote typeof (first)? Why did they put the variable inside parentheses

• you dont have to!! you can simply just write as such typeof first === 'something'

happy coding