Arrays - Reading Assignment

[CameronW]

1. What do arrays allow us to do? Arrays allow us to store multiple variables of the same type in a single variable
2. What index should you use in order to access the first element in an array? [0]

[godi]

1. Arrays allows the storage of multiple variables of the same type in a single variable.
2. [0]

[Maia]

1. Arrays allows to store multiple values in a single variable. Basically, it stores a collection of data, like a collection of variables of the same type. A good example would be the following: var meat = new array (“chicken”, “beef”, “pork”);

2. [ ] Operator.

[Michi_T]

1. What do arrays allow us to do?
   They allow us to store multiple values in a single variable (elements of the same type).
2. What index should you use in order to access the first element in an array?
   Index 0

[PartalosCrypto]

1. What do arrays allow us to do?
   Arrays allow us to store multiple values in a single variable.

2. What index should you use in order to access the first element in an array?
   The number index used to access the first element of an array is “0” zero.

[VBence99]

1. Arrays allow us to easily store long lists of variables.
2. You should use index zero like so: myArray[0]

[Melshman]

1. Arrays allow us to store multiple values in a single variable.
2. Arrays are indexed starting with the numeral 0.

[Avinash_Chulani]

1. The Array object lets you store multiple values in a single variable.

2. A zero based index means 0 is the first element, 1 is the second element, 2 is the third element etc.

[Melshman]

Hello everyone,

I’m doubling back to learn JS so I can really get the most out of Solidity’s test scripting framework and build some strong front-end-dev skills. I posted this in a different forum, but no one there seems to be biting.

My question is from the Eloquent JavaScript:

<script>
function multiplier(factor = 2){
  console.log(factor);
  return tootoos => tootoos * factor;
}

let ValFunc= multiplier(4);
console.log(ValFunc(6));
//how on Earth does tootoos get its value???
</script>

This code works just fine, even though “tootoos” is never explicitly referred to. I’m trying to wrap my head around how it gets it’s value. Can someone please explain to me (pretend I’m a 3rd grader if you need) how “ tootoos ” gets its value in the above code?

Thanks,
David

[NumaMisfit]

1. Arrays allow us to store multiple values into one variables. Multiple values needs to be the same type.

2. The number index used to access the first element of an array is “0” zero.

[Malik]

Hi @Melshman,

Please refer to this answer that I put out explaining how these types of functions work. These are also called “closures”.

Functions - Reading Assignment

Hi @tbaker, Closures are a very advanced topic in javascript. It is usually the defacto question for any Javascript interview you go to. So, it is completely understandable to not get it right even after many tries. I will not try to explain closures my self because there are experts on youtube who can articulate it better with flow diagrams and video explanations. However, I will make you understand how it works with your specific example – The multiplier is a function that returns another …

Hope this helps.

[supertramp007]

• What do arrays allow us to do? objects let you store multiple values in a single variable. It stores a fixed-size sequential collection of elements of the same type. An array is used to store a collection of data. parameter is a list of strings or integers. When you specify a single numeric parameter with the Array constructor, you specify the initial length of the array
• What index should you use in order to access the first element in an array? 0

[KK_Cheah]

1. What do arrays allow us to do?
   Array allows us to hold multiple value of the same data type

2. What index should you use in order to access the first element in an array?
   For the very first element of an array, computer identifies position starting point as 0 and hence, when finding the first element of array, it should refer to arrayName[0].

[Cero]

1.What do arrays allow us to do?
They allow us store multiple values/collection of data in a single variable. The array parameter is a lis of strings or integers. We can manipulate array with the properties functions.

2.What index should you use in order to access the first element in an array?
Example:
var x=[“one”,”two”,”three”]
access first element:
x[0]
Result:
one

[Nanoko]

1. What do arrays allow us to do?
   Store multiple values of a same data type.
2. What index should you use in order to access the first element in an array?
   0

[tanu_g]

1. What do arrays allow us to do?
An array allows us to store multiple values of the same type in a single variable.

2. What index should you use in order to access the first element in an array?
In Javascript, index 0 is used to access the first element.

[Ben17]

1. What do arrays allow us to do?

They enable us to store more than one value of the same type inside a variable.

2. What index should you use in order to access the first element in an array?

Using an array called exampleArray, you would access the first element by using exampleArray[0].

[VincentC]

What do arrays allow us to do?

Arrays allow the storage of multiple values in a single variable.

What index should you use in order to access the first element in an array?

The first element is in index 0.

[Chris_Adrian]

1. What do arrays allow us to do?

Arrays allow us to store a table of information and index it to be able to perform actions and query information in different ways.
2. What index should you use in order to access the first element in an array?

position 0

[ParaFX]

1. Arrays allow us to store multiple values within a variable.
2. The first element is located in index 0.