Solidity vs Rust: Hands‑on lessons from two real contracts

Edu posted a hands‑on comparison of a Solidity NFT marketplace and a Rust payment protocol on Stellar Soroban, exposing trade‑offs between the languages [Dev.to].

── What shipped ──

The Solidity project, CryptoMarket, implements a pause‑able NFT marketplace with Foundry tests and OpenZeppelin’s Pausable pattern. The repo contains 1,842 lines of Solidity, 124 unit tests, and was deployed to Goerli on March 12 2026 [CryptoMarket Repo].

The Rust project, Stellar Charge EV, is a full‑stack payment protocol that includes an OCPP 1.6J simulator, backend API, and frontend UI. It compiles to WebAssembly, runs on the Soroban testnet, and placed in the top 5 of the Stellar 37° · NearX hackathon on May 3 2026 [Stellar Charge EV Repo].

Both contracts are open source. The Solidity contract relies on a single‑transaction pause function; the Rust contract enforces compile‑time safety via the borrow checker and uses Soroban’s native asset handling.

── Why it matters ──

• Runtime safety vs. compile‑time guarantees. Solidity permits re‑entrancy unless developers add explicit guards; the 2016 DAO hack that drained roughly $60 million illustrates the risk [The DAO Hack]. Rust’s borrow checker eliminates memory‑related bugs before deployment, shrinking the attack surface.
• Tooling friction and onboarding speed. With Foundry and OpenZeppelin, a developer can prototype a pause‑able contract in under two hours. By contrast, configuring the Rust toolchain, optimizing WASM, and resolving toolchain mismatches added three weeks of effort for Stellar Charge EV.
• Network lock‑in dictates language choice. Ethereum‑compatible chains require Solidity, backed by extensive tutorials, libraries, and audit firms. Stellar, Solana, and Near expose Rust as the native language, enabling cross‑chain portability and a single codebase for non‑Web3 workloads.

── Editor's take ──

The decisive factor is the target ledger, not the language itself. When the network is fixed, language choice follows automatically, collapsing trade‑offs into tooling speed versus long‑term safety. Engineers should anchor their language decision to the ledger rather than abstract productivity claims.

── Reader poll ──

Which ecosystem do you build for?

• Ethereum/EVM (Solidity)
• Stellar/Soroban (Rust)
• Solana (Rust)
• Other (e.g., Near, Aptos)