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Languages & runtimes · #cpp
Template functions often emit cryptic errors. C++20 Concepts let you declare type requirements, producing clear diagnostics. This post shows a concrete example, compares errors, and gives practical steps to adopt concepts.
A decision guide for library authors weighing C++20 concepts against traditional SFINAE and macro‑based alternatives, with a compact comparison table, trade‑off analysis, and a concrete implementation example.
Integrate Lua safely into C++ by isolating each script in its own lua_State, restricting libraries for sandboxing, and using custom allocators to keep memory under control.
ROS2 lifecycle nodes impose a formal state machine (unconfigured → inactive → active → finalized) with explicit transition callbacks, giving deterministic control over resource allocation and startup/shutdown sequencing in complex robot systems.
Raw delete calls are one exception away from a leak. Here's how to choose between unique_ptr, shared_ptr, and weak_ptr — with working code, the cycle trap, and a sanitizer check.
Use PUBLIC, PRIVATE, and INTERFACE on targets instead of global commands so CMake propagates include paths and link dependencies transitively and correctly.
An architecture note on std::expected (C++23): requirements for adopting it, the minimal design, ABI boundaries where it must not appear, static-analysis checks, common failure modes, and when to choose a different strategy.
Stop bloating your Blueprints with redundant variables. Learn how to use UDataAsset to decouple game configuration from actor logic for better memory performance and faster iteration.
Discover how C++17’s std::optional replaces raw pointers and sentinel values, with a clear example, performance notes, and actionable guidance for modern codebases.
lua
ros
unrealengine