Program security - Updated type cosplay lesson

[0xCipherCoder]

Problem

Summary of Changes

• Updated code snippets with the latest anchor version
• Fixed content,
• Fixed grammar and styling
• Fixed as per guidelines

Fixes #
Unboxed PRs -
Starter - Unboxed-Software/solana-type-cosplay#1
Solution - Unboxed-Software/solana-type-cosplay#2

[mikemaccana]

This is a good start, but I have a few large-ish questions to resolve before getting it merged.

[mikemaccana]

More of complaint with the old lesson, but is a discriminant the same thing as a discriminator? This is confusing.

[0xCipherCoder]

Yes it's a bit confusing to me as well initially but discriminant manages enum variants internally in the Rust and discriminator is an explicit identifier used to distinguish different account types within Solana programs.

[mikemaccana]

One of the aims of our docs is to avoid confusion - we should call it out explicitly. Add an info ContentBox with:

While they sound similar, a Rust discriminant isn't the same thing as an Anchor discriminator! Rust itself has the concept of discriminants which are used to manage enums.

Or something similar - you're an excellent writer and can use whatever words you feel best illuminates the difference.

[0xCipherCoder]

This is a good start, but I have a few large-ish questions to resolve before getting it merged.

@mikemaccana Answered the questions and resolved the comments. Let me know if there is any additional feedback.

[mikemaccana]

@0xCipherCoder just one small fix but happy to mark this as winner for this lesson assuming you do it.

[0xCipherCoder]

@0xCipherCoder just one small fix but happy to mark this as winner for this lesson assuming you do it.

Thanks! @mikemaccana I have updated the content to make it easier to understand with callout. Please review and let me know if any additional changes are required. Also linting failed due to package not downloaded in git checks.