Blockchain solidity tutorials

[Paakwesi21]

Hi Patrick,
I am Harry and new to programming but interested in becoming a blockchain developer. I have been following your youtube video, which is of great help, however, I am getting a bit lost as you include the functions on adding people and the favoriteNumber - on the youtube video it will be around 2:19 to around 2:22 minutes.
I was wondering if there was a way of getting help as I am keen to learn this and eventually take up employment in the blockchain sector.
Thanking you for your help and support in this.

[alwayscommit]

Hello! Here's the solidity file for that example
https://github.com/PatrickAlphaC/simple-storage-fcc/blob/main/SimpleStorage.sol

Could you copy-paste the exact lines that you find difficult to understand?

There are two data structure implementations in this solidity example

1. Array - it is an indexed data structure that you can look up using indices starting from 0 up to the nth element. If you try to access an index that doesn't have a People object, it will result in an error. Here you create Objects of People structure (you could think of this as a Class in terms of traditional programming concepts) and this People object has two attributes, name and number. The array simply stores People objects that you can look up using 0, 1, 2, 3 and so on indices....

2. Mapping - This is a key-value-based data structure that allows you to look up a favorite number using a person's name. For example, you can add key as "some name" and value as "100", when you want to find out the favorite number of "some name", you can look up using this "some name" as the key.

If you're still confused, you can share the exact lines that you do not understand.

Also, you could look at what Arrays and Maps (Dictionaries) data structures are.

[PatrickAlphaC]

Thank you @alwayscommit!

@Paakwesi21 does this answer your question?