SOLIDITY SYNTAX

[MuzammilKhan6]

can someone please elaborate this piece of code? why we did this here? whats the need of this?

[rohitscript]

by using new keyword we are able to create new array !

[0xREALAldc]

@MuzammilKhan6 all right, so from the beginning.

We declared an dynamic array simpleStorageArray of SimpleStorage, because we used just [] and didn't specify the size of the array, where we will be able to store as many objects of type SimpleStorage as we want it.

Then we created a function that will instantiate a new object from the type SimpleStorage, that will be a new contract in the blockchain. After, we use the new SimpleStorage() and after we assign to the simpleStorage variable, we use our simpleStorageArray to add the new object to the array, using the method .push(simpleStorage).

We did this to demonstrate how we can use a contract to create other contracts, a contract factory, and also how to store them in a array and after make use of each of the ones that we create to call the functions store and retrieve.

I hope i've helped :)

[NickoMenty]

I didn't understand one part.

Before we created an array, we use only "simpleStorage", which stands for the name of the new contract we deploy by using "new SimpleStorage()".

But after we create an array, we use "SimpleStorage simpleStorage" to deploy new contract. My question is, why do we use "SimpleStorage" before "simpleStorage". I understand that it is array, but it just doesn't make sense in my head.)

Could you please explain this <3

[eggceptionalbcdev]

Hi there NickoMenty,

The reason why "SimpleStorage" is used before "simpleStorage" is because "SimpleStorage" is the name of the contract that is being imported into the StorageFactory contract.

When you import a contract into another contract, you need to specify the name of the imported contract in order to create an instance of it. In this case, the line "SimpleStorage simpleStorage = new SimpleStorage();" is creating a new instance of the SimpleStorage contract and assigning it to the variable "simpleStorage".

The first "SimpleStorage" refers to the contract name and the second "simpleStorage" refers to the variable name that is being used to reference the newly created instance of the SimpleStorage contract.

This syntax is used to differentiate between the name of the contract and the name of the variable that is being used to reference the contract instance, and it is a convention that is commonly used in Solidity code.

I hope this Makes sense :)

[NickoMenty]

Yes, this really does make sense! Just before I read your answer, I came to the same conclusion indeed. :)
Thank you so much