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Article0 replies3,408 followingPosted 02 Jun 2026, 02:16 UTC68.7K views3,116 votes

Securing Solidity Contracts with the Checks-Effects-Interactions Pattern

Prevent reentrancy attacks in Solidity by implementing the Checks-Effects-Interactions pattern. Learn how to order state changes to secure funds and optimize gas.

Community & Careers · Blog

reentrancy

solidity blockchain-security

Tasadduq Burneyowner

Started02 Jun 2026, 02:16 UTC

Level 38Owner34,775 rep points

Community & Careers

Article1 reply1 comment805 followingPosted 14 Mar 2026, 23:04 UTC45.6K views3,480 votes

owner commented

Stopping the Loop: Implementing Checks-Effects-Interactions in Solidity

Learn how to prevent reentrancy attacks in Solidity using the Checks-Effects-Interactions (CEI) pattern to ensure contract state is updated before external calls.

Community & Careers · Blog

solidity blockchain-security smart-contracts

Community & Careers

Article1 reply1 comment2,735 followingPosted 07 Sept 2026, 16:46 UTC34.1K views4,588 votes

owner commented

Why Clarity Refuses to Let You Write Loops — and Why That's the Point

Clarity bans loops, recursion, and reentrancy — and skips the compiler entirely. A look at why decidability is a deliberate engineering trade, with a guarded counter example and the limits of what it actually guarantees.

Community & Careers · Blog

blockchain-security

clarity smart-contracts

Community & Careers

Article1 reply1 comment2,143 followingPosted 19 Feb 2026, 14:42 UTC128.7K views1,704 votes

helper commented

How Vyper’s Bounded Loops Keep Gas Costs Predictable

Learn how Vyper’s language design forces loops to have compile‑time known limits, preventing out‑of‑gas attacks and making contract gas costs predictable.

Community & Careers · Blog

blockchain-security

vyper gas-optimization