The InterPlanetary File System (IPFS) is a protocol, hypermedia and file sharing peer-to-peer network for storing and sharing data in a distributed file system.

IPFS

Sui is a Layer 1 protocol blockchain designed as the first internet-scale programmable blockchain platform.

Walrus is a decentralized storage and data availability protocol designed specifically for large binary files, or "blobs"

Walrus

Move is an executable bytecode language used to implement custom transactions and smart contracts. 

Move

How to add a token to Suiet and Slush wallets?

What are the different types of blockchain networks and their characteristics?

How can I design a scalable event logging system in Move for real-time dApp analytics?

How to build a **replayable event-checkpoint indexer** in Move to allow parallel reprocessing and deterministic checkpoints?

How to build a replayable event-checkpoint indexer in Move

How to build a **threshold multisig wallet** in Move with on-chain policy-based invocation and safe key rotation?

How to build a threshold multisig wallet

How do I design **deterministic gas accounting** and cross-module fee sinks so fees are provably conserved and replay-safe?

How do i design deterministic gas accounting

How to implement a **provable cross-chain lock & mint** pattern (pegged asset) in Move using light-client verification?

How to implement a provable cross-chain lock & mint pattern (pegged asset) in Move?

How do I safely implement a **flash-loan** facility in Move that is immune to reentrancy and oracle-manipulation within a single transaction?

How do i safely implement a flash-loan facility in Move?

How can I design **upgradable modules** (logic upgrade) while preserving on-chain invariants and preventing honest-state corruption?

How can I design upgradable modules (logic upgrade)?

How can I design upgradable modules (logic upgrade) while preserving on-chain invariants and preventing honest-state corruption?

How can I design upgradable modules (logic upgrade) while preserving on-chain invariants?

Move’s generics enable reusable, type-safe code, critical for DeFi protocols handling multiple token types. Intermediate developers must apply constraints like key and store to ensure compatibility with Sui’s object model.
Why are generics useful in Move for building reusable DeFi modules? Write a generic Move module for a vault that can store and withdraw any coin type. What constraints ensure the module works with Sui’s coin system?
```
module vault::generic_vault {
    use sui::object::{Self, UID};
    use sui::coin::{Self, Coin};
    use sui::balance::{Self, Balance};
    use sui::tx_context::{Self, TxContext};
    use sui::transfer;

    struct Vault has key {
        id: UID,
        balance: Balance,
    }

    // Create vault for any coin type
    public entry fun create_vault(ctx: &mut TxContext) {
        let vault = Vault {
            id: object::new(ctx),
            balance: balance::zero(),
        };
        transfer::share_object(vault);
    }

    // Deposit coins into vault
    public entry fun deposit(vault: &mut Vault, coin: Coin) {
        coin::put(&mut vault.balance, coin);
    }

    // Withdraw coins (simplified to sender)
    public entry fun withdraw(
        vault: &mut Vault,
        amount: u64,
        ctx: &mut TxContext
    ) {
        let coin = coin::take(&mut vault.balance, amount, ctx);
        transfer::public_transfer(coin, tx_context::sender(ctx));
    }
}
```

Generic Types in Move for Reusability

Sui supports parallel execution. How does Move code need to be structured to benefit from this feature?

How does Move handle parallel execution?

If a process needs multiple user interactions (like a game or auction), what’s the best way to structure state and transactions?

How do I design multi-step workflows in Move?

I'm trying to make swaps using the functions client.findRouters, client.fastRouterSwap, and client.signAndExecuteTransaction but frequently encounter the 'MoveAbort' error. My balance seems stable at 100+ SUI, yet 1 out of 10 transactions fails. This error still persists after restoring the blockchain. How can I figure out what's going wrong?

Why do I keep getting 'MoveAbort' error in signAndExecuteTransaction?

Sui’s object versioning ensures deterministic outcomes in parallel transaction execution by tracking object versions and resolving conflicts via consensus (Narwhal/Bullshark). Intermediate developers must handle versioning to avoid conflicts in shared objects.

```
module leaderboard::shared_leaderboard {
    use sui::object::{Self, UID};
    use sui::tx_context::{Self, TxContext};
    use sui::transfer;
    use sui::dynamic_field as df;

    struct Leaderboard has key {
        id: UID,
    }

    // Create shared leaderboard
    public entry fun create_leaderboard(ctx: &mut TxContext) {
        let leaderboard = Leaderboard { id: object::new(ctx) };
        transfer::share_object(leaderboard);
    }

    // Update user score (Sui versioning ensures atomic updates)
    public entry fun update_score(leaderboard: &mut Leaderboard, user: address, score: u64) {
        df::add(&mut leaderboard.id, user, score);
        // Sui’s consensus ensures versioned updates are ordered
    }

    // Get user score
    public fun get_score(leaderboard: &Leaderboard, user: address): u64 {
        if (df::exists_(&leaderboard.id, user)) {
            *df::borrow(&leaderboard.id, user)
        } else {
            0
        }
    }
}
```
How does Sui’s object versioning prevent race conditions? Write a Move module for a shared leaderboard where users update scores, and explain how Sui ensures consistency if multiple users update simultaneously.

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