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Developer tools · #nim
Learn how to call C's printf from Nim using the FFI pragma, compile with the correct linker flags, verify the output, and troubleshoot common linking issues.
Stop-the-world GC pauses can ruin real-time performance. Learn how Nim's ARC and ORC provide deterministic memory management and how to handle reference cycles.
Mixing meters and seconds compiles in most languages. Nim's distinct types catch that at compile time with no runtime overhead, forcing explicit conversions for semantically different values that share a representation.
Compile Nim with --gc:orc to get reference counting plus an incremental cycle collector, giving deterministic cleanup and low latency for graph‑heavy services while avoiding stop‑the‑world pauses.
Nimble's requires clauses promise minimums, not reproducibility. Lock files record exact resolutions — here's when to commit them, when to avoid them, and how to verify they work.
Goal Determine whether Nim’s experimental ARC garbage collector can consistently reduce the stop‑the‑world latency that appears only when many async requests overlap, compared to the default Boehm GC. Constraints ARC is experimental and not fully supported on all platforms; the async runtime is single‑threaded by default, so GC pauses dominate latency spikes
When nimble upgrade is interrupted by a network failure or other error, the affected package directory can be left with partial or corrupted files. Nimble performs in-place replacement without a transactional rollback or automatic backup of the previous version, so the package may become unusable. The nimble check command verifies integrity but does not repa
A technical guide on packaging and publishing Nim libraries using Nimble, covering .nimble configuration, local development testing, and index publication.
Learn how to compile a Nim project with the ARC GC, run destructors predictably, and verify no memory leaks using Valgrind.
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