quest-submissions

Submissions for Emerald Bootcamp

Chapter 1 day 1 submissions

1. Explain what a blockchain is, in my own words:

A blockchain is a trustless shared database that ideally doesn't have a single point of failure (other than the internet in entirety.) It can allow people to transact resources in the form of "tokens" (fungible or non,) in a manner that can't be exploited, easily anyhow.

2. Explain what a smart contract is:

A smart contract is a program that runs on the blockchain. The perks are being able to form a pool of custom-made tokens, fungible or non, and perhaps shouldering some server costs by offloading mission critical code to that virtual machine.

3. Explain the difference between a transaction and a script:

A transaction changes the data of a smart contract in some way. A script only views the data, without modifying it.

Chapter 1 day 2 submissions

1. What are the five pillars of the Cadence programming language?

1: Safety and security: It has an insanely strong type system, seperation between contracts and transactions, and resource-oriented programming.

2: Clarity: The code is easy to read because it is declarative, so intent can be expressed clearly, which makes it easy to audit and review.

3: Approachability: It is written similarly to other programming languages, so adoption is easier.

4: Developer experience: Error messages are clear, so the contracts are easy to debug.

5: Resource oriented programming: Basically information that can't be in two places at once without causing an error in Cadence.

2. Without looking it up, why would these pillars be useful in coding?

These pillars seem to make for an advantageous and approchable means of utilizing the blockchain for your app.

Chapter 2 Day 1 submissions

1. Deploy a contract to account 0x03 called "JacobTucker". Inside that contract, declare a constant variable named is, and make it have type String. Initialize it to "the best" when your contract gets deployed.

Done.

2. Check that your variable is actually equals "the best" by executing a script to read that variable. Include a screenshot of the output.

Chapter 2 Day 2 submissions

1. Explain why we wouldn't call changeGreeting in a script

changeGreeting changes the state, a script can't do that.

2. What does Authaccount mean in the 'prepare' phase of the transaction?

It authorizes the smart contract to access the information in your account.

3. What is the difference between the prepare phase and the execute phase in the transaction?

Prepare reads info/data in your account, and execute modifies blockchain data.