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Languages & runtimes · #rust
An upgrade needs a compatibility check, a tested release and a recovery path. Which changes deserve particular attention before the new version reaches production?
A failure needs to be narrowed down before settings are changed or operations retried. Which evidence best separates application errors from environment and dependency problems?
Rust developers often need to retry fallible operations while guaranteeing that a write side‑effect occurs only once. The retry crate (v0.2.0) supplies a Retry struct and a RetryFn helper that repeatedly invoke a closure until success or policy exhaustion. To avoid duplicate writes, the operation closure typically performs an idempotency guard—such as checki
Biome workspace member visibility enforcement Biome's workspace configuration supports include and exclude fields in workspace.json to control member exposure. Additionally, the publish configuration can restrict accidental public access by setting publish = false for private members. However, Biome's resolver behavior for workspace members differs from Carg
Rust's default Cargo profiles create a documented divergence: the dev profile sets overflow-checks = true , so integer overflow panics during local testing, while the release profile sets it to false, so the same arithmetic silently wraps in production binaries. A service can pass every local test and still ship code whose overflow behavior was never actuall
Memory Safety Across the FFI Boundary Rust provides strict memory safety guarantees via its ownership and borrowing system. When interfacing with C through the Foreign Function Interface (FFI), developers utilize unsafe blocks and repr(C) attributes to ensure layout compatibility and allow raw pointer dereferencing. Concurrency and Data Race Uncertainty Whil
I'm trying (for hours now) to install the cargo crate diesel_cli for postgres. However, every time I run the recommended cargo command: cargo install diesel_cli --no-default-features --features postgres I wait a few minutes just to see the same build fail with this message: note: LINK : fatal error LNK1181: cannot open input file 'libpq.lib' error: aborting
The goal is to determine the exact boundary at which Cargo’s rebuild logic and rustc’s incremental state diverge, causing a stale artifact to be reused. Constraints include changes to the toolchain, RUSTFLAGS, dependency versions, and build‑script side effects that may not be fully captured by Cargo’s fingerprinting. The uncertainty lies in whether Cargo’s c
A performance change should improve the measured workload without sacrificing correctness or wasting capacity. Which measurements and bottlenecks should be considered first?