CTTI
A technical mechanism that completes type inference at the compilation stage, achieving zero runtime overhead at the cost of code size expansion and increased compile time. CTTI is commonly found in systems-level languages such as Zig and C++ template metaprogramming, where predictable runtime performance is critical.
Timeline (last 90 days)
CTTI (compile-time type information) grows exponentially with the number of type combinations, whereas RTTI (runtime type information) is linear.
CTTI completes type deduction at compile time so that runtime code requires no type lookups, but the trade-off is that each unique type combination triggers an instantiation, leading to code bloat.
Zig's behavior with CTTI is explicit, handing decision-making authority and responsibility to the developer, who can choose to use vtable methods to avoid code bloat.
CTTI is suitable for scenarios that pursue extreme runtime performance with a limited number of type combinations, while RTTI is suitable for scenarios with an explosion of type combinations and a focus on binary size.
All Facts (4)
CTTI (compile-time type information) grows exponentially with the number of type combinations, whereas RTTI (runtime type information) is linear.
50%UnverifiedCTTI completes type deduction at compile time so that runtime code requires no type lookups, but the trade-off is that each unique type combination triggers an instantiation, leading to code bloat.
50%UnverifiedZig's behavior with CTTI is explicit, handing decision-making authority and responsibility to the developer, who can choose to use vtable methods to avoid code bloat.
50%UnverifiedCTTI is suitable for scenarios that pursue extreme runtime performance with a limited number of type combinations, while RTTI is suitable for scenarios with an explosion of type combinations and a focus on binary size.
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