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JavaScript Proxy objects let you wrap any target object and intercept fundamental operations—property reads, writes, and existence checks—through handler traps. This metaprogramming feature is particularly valuable for development tools, reactive state management, and defensive programming patterns.
Learn how a simple compile‑time macro can generate getters, setters and equality methods for plain data classes, reducing boilerplate while keeping builds fast.
Learn how to use Jule's comptime feature to precompute data and enforce invariants during compilation, creating zero-cost abstractions and faster binaries.
C++17’s if constexpr replaces complex SFINAE patterns, enabling compile‑time branching that improves readability, safety, and compile times. See a concrete example and practical trade‑offs.
Haxe macros generate typed code at compile time, eliminating boilerplate with zero runtime cost. This guide walks through a working build-info macro, hygiene rules, compile-time costs, and how to verify expansions in the generated target output.
Source generators move mapping boilerplate from runtime reflection to compile-time code emission. A worked example shows a tiny attribute-driven mapper that produces debuggable, zero-overhead C# during the build.
Haxe macros run at compile time and rewrite your AST before target code is generated. Here's a worked compile-time validation example, plus the debugging, versioning, and cross-target trade-offs that decide whether a macro belongs in your codebase.
Zig's comptime turns generics, lookup tables, and compile-time validation into ordinary Zig code. A worked fixed-capacity stack example, plus the real trade-offs: compile times, error messages, and version churn.
Zig's comptime replaces macros and templates with ordinary code evaluated by the compiler. Here's how it powers zero-cost generics, with a ring buffer example and the trade-offs.
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csharp
zig