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Difficulty - Medium

Total Plays - 12

Allowed Time - 10 sec

Best time - 1.748 sec

Why is bytes32 cheaper than string in storage?

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Explanation:
bytes32 has a fixed 32-byte size and fits into a single storage slot. string is dynamically sized and requires additional storage pointers and length metadata.

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Difficulty - Medium

Total Plays - 14

Allowed Time - 10 sec

Best time - 3.228 sec

Which operation resets a dynamic array length to zero?

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Explanation:
Using delete on a dynamic array sets its length to zero. Storage slots may remain allocated but become inaccessible through the array.

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Difficulty - Medium

Total Plays - 11

Allowed Time - 10 sec

Best time - 3.454 sec

What does delete do to a mapping entry?

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Explanation:
Deleting a mapping key resets its value to the default type value. The key itself still exists conceptually since mappings do not track keys.

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Difficulty - Medium

Total Plays - 11

Allowed Time - 10 sec

Best time - 1.444 sec

Which data location persists across transactions?

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Explanation:
Storage persists on-chain across transactions and blocks. Memory and calldata are temporary and cleared after execution completes.

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Vijay B

@xDhgFi3 • 1w

How would you approach breaking into protocol development as a final-year Solidity dev?

Hi everyone,I’m a final-year student and have been involved in Web3 since 2021. I spent close to two years interning with startups and am comfortable with Solidity (writing, debugging, and...

2

Replies
Sayali Bhandari

@SayaliB • 1w

Stuck Between AI and Blockchain — Feels Like I Might Choose Wrong

I’m at a confusing point in my career and could use honest input from people who’ve been in the space longer.I’ve spent time learning blockchain basics and building small things,...

5

Replies
SmartChainSmith

@SmartChainSmith • 1w

What US Companies Actually Evaluate When Hiring Remote Blockchain DevOps Engineers from India

I’ve been working in blockchain DevOps for about five years, mostly with L1 and L2 teams, and I’m now exploring remote roles with US-based companies.On paper, I check most of...

3

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Application deadline: 2 weeks

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Technical Support Engineer

Jito Labs • FULL_TIME • NA

Job description

Jito Labs builds high-performance distributed systems on Solana, including the Jito-Solana client and block-building infrastructure used by validators and MEV participants. The team operates as a small, profitable engineering-focused company working on production-grade blockchain infrastructure. As a Technical Support Engineer, you will act as a technical point of contact for...

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Application deadline: 2 weeks

P

Research Engineer

Plasma • FULL_TIME • NA

Job description

Plasma is building a purpose-designed blockchain optimized for stablecoin payments, focusing on performance, predictability, and security for real-world financial use cases. The network is fully EVM-compatible, uses Reth as its execution layer, and runs on a custom high-performance consensus protocol, PlasmaBFT. As a Research Engineer, you will work within a...

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Application deadline: 2 weeks

P

Fullstack Engineer

Paradex • FULL_TIME • NA

Job description

Paradex is a decentralized finance platform building a unified system that combines exchange trading, asset management, and borrow/lend functionality on a high-performance blockchain. The team operates with a flat structure and focuses on shipping production-grade systems without traditional management layers. As a Fullstack Engineer, you will own the end-to-end development...

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Application deadline: 2 weeks

P

Data Engineer

Paradex • FULL_TIME • NA

Job description

Paradex is a decentralized finance platform combining exchange trading, asset management, and borrow/lend functionality within a single unified account structure. The company operates a high-throughput blockchain-based system supporting a wide range of spot and derivatives markets. As a Data Engineer, you will be responsible for designing and maintaining the data...

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Aditi R

@aGoKU4J • 2w

Clean code, but still rejected — what do juniors miss in take-home assignments?

I’m a junior developer and I keep running into the same problem. My take-home assignments usually work, the code is clean, but I still get rejected — often without any...

3

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Difficulty - Medium

Total Plays - 10

Allowed Time - 10 sec

Best time - 4.491 sec

What happens if a public variable name conflicts with a function name?

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Explanation:
Public variables automatically generate getter functions. If a function shares the same name, the compiler prioritizes the variable-generated getter, shadowing the function definition.

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AshishS

@Web3SecurityPro • 2w

What skills actually matter for UI/UX roles in NFT platforms and decentralized identity?

Looking to get into UI/UX design for blockchain and metaverse projects—what’s the real deal with hiring right now?For those already working on NFT platforms, virtual asset tools, or decentralized ID...

10

Replies
Difficulty - Medium

Total Plays - 10

Allowed Time - 10 sec

Best time - 3.590 sec

Which keyword prevents further inheritance of a contract?

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Explanation:
Solidity does not support a final or sealed keyword for contracts. Any contract can be inherited unless architectural constraints are enforced manually.

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