Cajeta

Cajeta is a hybrid systems and application language. It pairs C++-style true templates (monomorphized, not erased), multiple inheritance, and operator overloading with Java-style class semantics and annotations, and Rust-inspired single-owner memory management — expressed through one explicit allocation idiom that lets the caller choose stack or heap at initialization and an # operator that transfers ownership. Developers coming from C++, Java, C#, Kotlin, TypeScript, or Rust find the grammar familiar on day one.

Its defining attributes:

• One ownership model, no reference counting. A single-owner heap with static move checking, scope-based drops, and path-level borrow tracking — a memory model that stays out of your way.
• True zero-copy views and wire formats. Read structured bytes in place, no deserialization pass.
• Templates with C++ semantics. Monomorphized specialization, wildcards, and operator overloading — not type erasure.
• A fast, allocation-light runtime. A lightning-fast networking stack and predictable, GC-free performance.
• Agent-native from the ground up (see below).

The compiler is LLVM-backed (LLVM 23) and produces either…